This Conference is by muni cipal Sta ndi ng Committee research deci de d hel d of, main task is i n-dept h learni ng impleme nt XI G eneral Se cretary on "tw o learn a do" learni ng educati on of important i ndicates s pirit and provi ncial Se cretary XXX im portant spee ch spirit, a ccordi ng to ce ntral de ployment and pr ovincial requirements , on I city "two lear n a do" learning e ducation work for arra ngements depl oyment, educati on g uide General mem bers further firm ide al faith, and keep on party loyalty, a nd s et breeze uprig ht, and courage to play as, for in province first full built well -off social, a nd Building higher level s of ecologi cal vitality city pr ovide a strong organizati onal g uarantee of happine ss. All party members in t he "Constituti on Party rules, series of spee che s, be qual ified party member s" education, Party Ce ntral Committee to deepen the inner-party education, adva nci ng the compre hens ive yet anot her important practi ce i n strictly admi nistering t he part y, is to promote the inner-party education from "key minority" to the vast number of party members expa nde d, from the concentration of important measure s to extend educati on to reg ular educati on, i s leadi ng the task of party buil ding this year. This ye ar, the XI General Secretary on many occasi ons "two" study and educati on is sue d instructi ons, pr ofoundly il lustrates t he sig nificance of e ducation, brill iantly descr ibes t he overall objective s, ba sic re quireme nts and main ta sks of e ducation, made clear that t he main re spons ibility of the hea d of the party orga nization at all level s and s hal l carry out, poi nt in t he right directi on for t he us to carry out study and educati on, provide the fundame ntal follow. On April 6 , Li u Yunshan, Comrade Z hao Leji i n Central "two" Forum on e ducational work , a careful de ployment of this w or k, put forwar d a cl ear requirement. On A pril 1 3, the Party Secretar y, Xi e Fuz han, Direct or of the provi ncial pe ople' s Congres s, the provi nce' s "two" study educational Confere nce, made s pe cific arrangeme nts to carry out study and educati on i n the provi nce . We wa nt to s eriously study le d And fur ther implementati on. Party accor ding to t he s pirit of the Ce ntral and provi ncia l requirements, base d on a ct ual city, res earch has devel ope d a "two" educati onal programmes a nd st udy contents s pe cific pr ogrammes, we wa nt to pay spe cial at tenti on t o follow -up. Now, I make a few remarks. First, dee peni ng understanding, e nha nci ng grasp "two" e ducati ona l responsibility since the party's 18, Comrade XI Jinping as G eneral Se cretary of the CPC Central Committee made a series of major de ployment ar ound the party's constructi on, maki ng a series of punch, constr ucti on of a ne w political style s and t he aspirations of the Party greatly condensed. "Two" study a nd e ducation, reflects the i nterlocking, step by ste p, further promote t he comprehensive strictly admi nistering the party's firm determinati on a nd politica l will, to pus h forward t he "four comprehensive" strategy is of great signifi cance. We should be s upported by pol itical a nd overall 阀门及其分类? 一、什么叫阀门:? 用来控制管道介质流动的具有可动机构的机械产品,叫做阀门。? 二、什么叫通用阀门:? 各工业企业中管道上普遍采用的阀门,叫做通用阀门。? 三、阀门的分类(分类方法主要有以下三种)? ( 一 ) ?按 用 途 和 作 用 分 类 : ? ?? ???? ?? ? ? ? ?? ?? ?? ????? ? ? ?? ??? ?????? ? ?? ?????? ?? ?? ?? ?????? ? (二)接主要参数分类:? ???? ( ?) 真 空 阀 : 工 作 压 力 低 于 标 准 大 气 压 的 阀 门 ? ( ? ) 低 压 阀 : 公 称 压 力 ?????? 的 阀 门 ? ( ? ) 中 压 阀 : 公 称 压 力 ??????? 的 阀 门 ? ( ? ) 高 压 阀 : 公 称 压 力 ?????? 的 阀 门 ? ( ) 超 高 压 阀 门 : 公 称 压 力 ?????? ????? ( ? ) 高 温 阀 : ? > ? 的 阀 门 ? ( ? ) 中 温 阀 : ???? 的 阀 门 ? ( ? ) 常 温 阀 : ???? 的 阀 门 ? ( ? ) 低 温 阀 : ??? 的 阀 门 ? ?? ?? ( ?) 非 金 属 材 料 阀 门 : 如 用 陶 瓷 、 玻 璃 钢 、 塑 料 制 造 的 阀 门 。 ? ( ?) 金 属 材 料 阀 门 : 如 铜 合 金 、 铝 合 金 、 铅 合 金 、 钛 合 金 、 蒙 乃 尔 合 金 、 铸铁、碳钢、低合金钢、高合金钢阀门。? ( ?) 金 属 阀 体 衬 里 阀 门 : 如 衬 铅 阀 门 、 衬 塑 料 阀 门 、 衬 搪 瓷 阀 门 。 ? ( 三 )通 用 分 类 法 :( 这 种 分 类 方 法 既 按 原 理 作 用 又 按 结 构 划 分 是 目 前 国 内 、 国 际 最 常 用 的 分 类 方 法 共 ?? 类 ) ? height, deep understanding of "two" study a nd e ducation on strengtheni ng education of party members and ca dres a nd buil ding a conti ngent of cadres with high quality, maintaini ng and devel opi ng the party's adva nce d nat ure and purity of the sig nifica nce of practi cal thought a nd a ction into Ce ntral and provincial re quireme nts. First, t he "two" study and educati on, is continuously stre ngthening the party's ideol ogical a nd politi cal constr ucti on of major de ployme nt. Attach importance to party ide ology, is the spe cialty of our part y, si nce t he party's 18 di stinct chara cteristic of strictly admi nistering the party. XI General Secr etary pointe d out that our party must im prove itself, the first task is t o strengt hen i deol ogical and pol itical constructi on, the k ey is t he educati onal ma nagement of party members and ca dres. At pre sent, t he ide as and value s have become increasi ngly activ e, soci al trends ar e largely stirring blend, cultural exchange s and the complexity of the situati on, drove, some party members ' i deol ogical a nd politi cal pr oblems , there i s an urgent nee d to stre ngthe n party ideol ogy: cl earing the fog, was centeri ng. Like, s ome belief confused, "thr ee a confide nce" ins ufficient, praised 行 定 规 照 按 会 大 表 代 使 。 制 任 责 长 善 完 全 健 利 权 的 督 监 和 理 管 与 参 工 职 教 障 保 , 设 建 主 民 园 儿 幼 进 推 了 为 Western value concept; s ome s pirit empty, not letter Marty letter ghosts; s ome political dis cipli ne relaxation, in party not statements party, a nd not love party, a nd not nursing party, a nd not for party, even denie d party of s ome most ba sic of pri nci ples a nd position; some organizati on discipli ne la x, not by pr ovides partici pate in party of organise d, not completed party distri buti on of task, not by party of organizati on principles do; some eg oism seri ous, and pe ople ra ce Lee, and self-deali ng; s ome de presse d, and es cape re spons ibilit y, Omis sion, not as good as some moral decli ne, violati ng publi c morality, professi onal et hics a nd family virtue s, not pers onal morality; some honesty and self -disci pline awareness is not strong, wit h no fear, lawles sne ss, abuse , and corr upti on among political, a nd so on. T hese problems, after all, and ignore the Constitution Party rule s, ignore adva nce d the ory, a nd la ck of sense of consci ous nes s, cons cious ness, pioneer of the party ha s a lot to do with it. T hought, belief and faith, stick to t he s piritual purs uit of Communists, has alway s bee n the Communists to s ettle dow n at all. of the party Constituti on, a nd spe ech into a s eries of powerful wea pon, cl earing the barriers a nd gai n the fetters of the mind, improve t he ide ologi cal and political qualit y, wort hy of the glori ous title of the party member s. Second, the "two" study and educati on, compre he nsively strengt hen t he construction of grass-r oots party organizati ons a nd party members is a n importa nt ... Awake, our party members and party orga nizations, e spe cially at the grassr oots lev el, some of the party member's qual ity is not high, lax di sci pline and some primary party organizati ons are weak and lax, wi ped out some grassroots ca dres as, cha os as, t hick friends, eati ng, a nd s o on. The se pr oblems are l ike "Two" study and educati on, is t o ena ble ea ch party to party rules etche d in the heart This Conference is by muni cipal Sta ndi ng Committee research deci de d hel d of, main task is i n-dept h learni ng impleme nt XI G eneral Se cretary on "tw o learn a do" learni ng educati on of important i ndicates s pirit and provi ncial Se cretary XXX im portant spee ch spirit, a ccordi ng to ce ntral de ployment and pr ovincial requirements , o n I city "two lear n a do" learning e ducation work for arra ngements depl oyment, educati on g uide General mem bers further firm ide al faith, and keep on party loyalty, a nd s et breeze uprig ht, and courage to play as, for in province first full built well -off social, a nd Building higher level s of ecologi cal vitality city pr ovide a strong organizati onal g uarantee of happine ss. All par ty members in t he "Constituti on Party rules, series of spee che s, be qual ified party member s" education, Party Ce ntral Committ ee to deepen the inner-party education, adva nci ng the compre hens ive yet anot her important practi ce i n strictly admi nistering t he part y, is to promot e the inner-party education from "key minority" to the vast number of party members expa nde d, from the concentration of important measure s to extend educati on to reg ular educati on, i s leadi ng the task of party buil ding this year. This ye ar, the XI General Secretary on many occasi ons "two" study and educati on is sue d instructi ons, pr ofoundly il lustrates t he sig nificance of e ducation, brill iantly descr ibes t he overall objective s, ba sic re quireme nts and main ta sks of e ducation, made clear that t he main re spons ibility of the hea d of the party orga nization at all level s and s hall carry out, poi nt in t he right directi on for t he us to carry out study and educati on, provide the fundame ntal follow. On April 6 , Li u Yunshan, Comrade Z hao Leji i n Central "two" Forum on e ducational work , a careful de ployment of this w or k, put forwar d a cl ear requirement. On A pril 1 3, the Party S ecretar y, Xi e Fuz han, Direct or of the provi ncial pe ople' s Congres s, the provi nce' s "two" study educational Confere nce, made s pe cif ic arrangeme nts to carry out study and educati on i n the provi nce . We wa nt to s eriously study le d And fur ther implementati on. Party accor ding to t he s pirit of the Ce ntral and provi ncia l requirements, base d on act ual city, res earch has devel ope d a "two" educati onal programmes a nd st udy contents s pe cific pr ogrammes, we wa nt to pay spe cial attenti on t o follow -up. Now, I make a few remarks. First, dee peni ng understanding, e nha nci ng grasp "two" e ducati ona l responsibility since the party's 18, Comrade XI Jinping as G eneral Se cretary of the CPC Central Committee made a series of major de ployment ar ound the party's constructi on, maki ng a series of punch, constr ucti on of a ne w political style s and t he aspirations of the Party greatly condensed. "Two" study a nd e ducat ion, reflects the i nterlocking, step by ste p, further promote t he comprehensive strictly admi nistering the party's firm determinati on a nd politica l will, to pus h forward t he "four comprehensive" strategy is of great signifi cance. We should be s upported by pol itical a nd overall ??? ???? ??? ??? ??? ??? ????? ??? ??? ??? ??? ?? ???? ? ? ? 无缝钢管的基本知识介绍? 无 缝 钢 管 ????????????? 是 一 种 具 有 中 空 截 面 、 周 边 没 有 接 缝 的 长 条 钢材。钢管具有中空截面,大量用作输送流体的管道,如输送石油、天然气、煤 气、水及某些固体物料的管道等。钢管与圆钢等实心钢材相比,在抗弯抗扭强度 相同时,重量较轻,是一种经济截面钢材,广泛用于制造结构件和机械零件,如 石油钻杆、汽车传动轴、自行车架以及建筑施工中用的钢脚手架等。用钢管制造 环形零件,可提高材料利用率,简化制造工序,节约材料和加工工时,如滚动轴 承套圈、千斤顶套等,目前已广泛用钢管来制造。钢管还是各种常规武器不可缺 少的材料,枪管、炮筒等都要钢管来制造。钢管按横截面积形状的不同可分为圆 管和异型管。由于在周长相等的条件下,圆面积最大,用圆形管可以输送更多的 流体。此外,圆环截面在承受内部或外部径向压力时,受力较均匀,因此,绝大 多数钢管是圆管。? ? 从 国 际 和 国 内 两 个 市 场 来 看 , 无 缝 钢 管 ( 包 括 石 油 专 用 管 ) 的 现 有 生 产 能 力均已大于需求。所以,今后的重点应放在充分发挥现有机组的能力,开发出高 强度等级、高抗击毁、高抗腐蚀的石油管、高压锅炉管和气瓶管等产品。也是国 家针对当前我国钢铁市场进行优化产品结构的内容。这也是增加在国内外产品竞 争力、扩大市场份额的关键所在。就是说,提高国内钢管企业的市场竞争力是加 和 ? 以 后 国 内 企 业 长 期 的 任 务 和 成 功 发 展 的 关 键 。 ? ?? 无 缝 管 种 类 如 下 : ?? ( 1 ) 一 般 结 构 、 机 械 结 构 用 无 缝 管 ( ?????? ) ? ( 2 ) 低 中 压 锅 炉 用 无 缝 管 ( ???? ) ? ( 3 ) 高 压 锅 炉 用 无 缝 管 ????? ( ??? ) ?? ( 4 ) 输 送 流 体 用 无 缝 管 ( ????? ) ?? ( 5 ) 冷 拔 或 冷 扎 精 密 无 缝 管 ( ????? ) ? ( 6 ) 地 质 钻 探 用 钢 管 ( ??? ) ?? ( 7 ) 石 油 钻 探 钢 管 ( ??? ) ? ( 8 ) 液 压 气 缸 筒 精 密 内 径 用 无 缝 管 ( ?????? ) ?? ( 9 ) 化 肥 专 用 无 缝 管 ( ????? ) ?? height, deep understanding of "two" study and educati on on strengt heni ng educati on of party member s and cadre s and buildi ng a continge nt of cadre s with high quality, maintaini ng and devel opi ng the party' s advanced nature a nd purity of the sig nifica nce of practica l thought and acti on i nto Ce ntral and provi nci al requirements. Fir st, the "two" study and education, is conti nuously strengtheni ng the party's i de ological and pol itical constructi on of major de ploy ment. Attach importa nce to party ide ol ogy, is t he specialty of our part y, since the party's 18 distinct characteristi c of strictly a dmini stering the part y. XI Ge neral Secretary pointe d out that our party must improve its elf, the first task is to strengthen ideol ogical a nd political construction, the key is t he educati onal ma nagement of party member s and cadre s. At prese nt, the i deas a nd value s have become increasingly a ctive, s ocial t rends are largely stirri ng ble nd, cult ural excha nges a nd the com plexity of the situati on, drove, some party member s ' ide ologi cal and political pr obl ems, there i s an urge nt nee d to strengt hen party ide ology: clearing t he fog, was centeri ng. Like, some belief confus ed, "three a confidence" ins ufficient, praised 行 定 规 照 按 会 大 表 代 使 。 制 任 责 长 善 完 全 健 利 权 的 督 监 和 理 管 与 参 工 职 教 障 保 , 设 建 主 民 园 儿 幼 进 推 了 为 Western value conce pt; s ome s pirit empty, not letter Marty letter ghosts; s ome political disci pline relaxation, i n party not statements party, a nd not love part y, and not nur sing part y, and not for party, eve n de nied party of some most basi c of principles and position; s ome orga nization dis cipline lax , not by pr ovide s partici pate in party of organise d, not completed party distri buti on of task, not by party of organizati on pri nci ples do; some eg oism seri ous , and pe ople ra ce Le e, and self -dealing ; some depre sse d, and esca pe res ponsi bility, Omissi on, not a s good as s ome moral de cline, violati ng public moralit y, profes sional ethi cs and family virtues, not per sonal morality; s ome honesty a nd self-dis cipli ne aware nes s is not strong, with no fear, lawle ssne ss, a buse, and corrupti on am ong politica l, and so on. T hese problems, after all, and ignore the Constitution Party rule s, ignore adva nce d the ory, and lack of se nse of consci ousne ss, consci ousnes s, pi one er of the party has a lot to do wit h it. Thoug ht, belief and faith, stick t o the s piritual purs uit of Communists , has al ways bee n the Communists to s ettle down at all. "Two" study and educati on, is t o ena ble ea ch party to party rules et che d in the heart of the party Constituti on, a nd spe ech into a s eries of powerful wea pon, cl earing the barriers a nd gai n the fetters of the min d, improve t he ide ologi cal and political qualit y, wort hy of the glori ous title of the party member s. Second, the "two" study and educati on, compre he nsively strengt hen t he construction of grass-r oots party organizati ons a nd party members is a n importa nt ... Awake, our party members and party orga nizations, e spe cially at the grassr oots lev el, some of the party member's qual ity is not high, lax di sci pline and some primary party organizati ons are weak and lax, wi ped o ut some grassroots ca dres as, cha os as, t hick friends, eati ng, a nd s o on. The se pr oblems are l ike 2 This Conference is by muni cipal Sta ndi ng Committee research deci de d hel d of, main task is i n-dept h learni ng impleme nt XI G eneral Se cretary on "tw o learn a do" learni ng educati on of important i ndicates s pirit and provi ncial Se cretary XXX im portant spee ch spirit, a ccordi ng to ce ntral de ployment and pr ovincial requirements , on I city "two lear n a do" learning e ducation work for arra ngements depl oyment, educati on g uide General mem bers further firm ide al faith, and keep on party loyalty, a nd s et breeze uprig ht, and courage to play as, for in province first full built well -off social, a nd Building higher level s of ec ologi cal vitality city pr ovide a strong organizati onal g uarantee of happine ss. All party members in t he "Constituti on Party r ules, series of spee che s, be qual ified party member s" education, Party Ce ntral Committee to deepen the inner-party education, adva nci ng the compre hens ive yet anot her important practi ce i n strictly admi nistering t he part y, is to promote the inner -party education from "key minority" to the vast number of party members expa nde d, from the concentration of important measure s to extend educati on to reg ular educati on, i s leadi ng the task of party buil ding this year. This ye ar, the XI General Secretary on many occasi ons "two" study and educati on is sue d instructi ons, pr ofoundly il lustrates t he sig nificance of e ducation, brill iantly descr ibes t he overall objective s, ba sic re quireme nts and main ta sks of e ducation, made clear that t he main re spons ibility of the hea d of the party orga nization at all level s and s hall carry out, poi nt in t he right directi on for t he us to carry out study and educati on, provide the fundame ntal follow. On April 6 , Li u Yunshan, Comrade Z hao Leji i n Central "two" Forum on e ducational work , a careful de ployment of this w or k, put forwar d a cl ear requirement. On A pril 1 3, the Party Secretar y, Xi e Fuz han, Direct or of the provi ncial pe ople' s Congres s, the provi nce' s "two" study educational Confere nce, made s pe cific arrangeme nts to carry out study and educati on i n the provi nce . We wa nt to s eriously study le d And fur ther implementati on. Party accor ding to t he s pirit of the Ce ntral and provi ncia l requirements, base d on act ual city, res earch has devel ope d a "two" educati onal programmes a nd st udy contents s pe cific pr ogrammes, we wa nt to pay spe cial attenti on t o follow -up. Now, I make a few remarks. First, dee peni ng understanding, e nha nci ng grasp "two" e ducati ona l responsibility since the party's 18, Comrade XI Jinping as G eneral Se cretary of the CPC Central Committee made a series of major de ployment ar ound the party's constructi on, maki ng a series of punch, constr ucti on of a ne w political style s and t he aspirations of the Party greatly condensed. "Two" study a nd e ducation, reflects the i nterlocking, step by ste p, further promote t he comprehensive strictly admi nistering the party's firm determinati on a nd politica l will, to pus h forward t he "four comprehensive" strategy is of great signifi cance. We should be s upported by pol itical a nd overall ( 1 0 ) 船 舶 用 管 ( ???? ) ?? ( 1 1 ) 石 油 裂 化 管 ( ???? ) ?? ( 1 2 ) 各 种 合 金 管 ????????????? 、 ????????????????????????? ? 焊接钢管的基本知识介绍? 焊接钢管是指用钢带或钢板弯曲变形为圆形、方形等形状后再焊接成的、表 面有接缝的钢管。焊接钢管生产工艺简单 ,生产效率高,品种规格多,设备资少, 但 一 般 强 度 低 于 无 缝 钢 管 。? 世 纪 ? 年 代 以 来 ,随 着 优 质 带 钢 连 轧 生 产 的 迅 速 发 展以及焊接和检验技术的进步,焊缝质量不断提高,焊接钢管的品种规格日益增 多,并在越来越多的领域代替了无缝钢管。? 按焊接方法不同可分为电弧焊管、高频或低频电阻焊管、气焊管、炉焊管、 邦迪管等。按焊缝形状可分为直缝焊管和螺旋焊管。? 电焊钢管用于石油钻采和机械制造业等。炉焊管可用作水煤气管等,大口径 直缝焊管用于高压油气输送等;螺旋焊管用于油气输送、管桩、桥墩等。焊接钢 管比无缝钢管成本低、生产效率高。直缝焊管生产工艺简单,生产效率高,成本 低,发展较快。螺旋焊管的强度一般比直缝焊管高,能用较窄的坯料生产管径较 大的焊管,还可以用同样宽度的坯料生产管径不同的焊管。但是与相同长度的直 缝 管 相 比 , 焊 缝 长 度 增 加 ??? , 而 且 生 产 速 度 较 低 。 因 此 , 较 小 口 径 的 焊 管 大 都 采 用 直 缝 焊 , 大 口 径 焊 管 则 大 多 采 用 螺 旋 焊 。 ?? 焊接钢管采用的坯料是钢板或带钢,因其焊接工艺不同而分为炉焊管、电焊 (电阻焊)管和自动电弧焊管。因其焊接形式的不同分为直缝焊管和螺旋焊管两 种。因其端部形状又分为圆形焊管和异型(方、扁等)焊管。焊管因其材质和用 途不同而分为如下若干品种:? ???? (低压流体输送用镀锌焊接钢管) 。主 要 用 于 输 送 水 、煤 气 、 空气、油和取暖热水或蒸汽等一般较低压力流体和其他用途管。其代表材质 ??? 级 钢 。 ? ???? (低压流体输送用镀锌焊接钢管) 。主 要 用 于 输 送 水 、煤 气 、 空气、油和取暖热水或蒸汽等一般较低压力流体和其它用途管。其代表材质为: ??? 级 钢 。 ? ?????? ( 矿 用 流 体 输 送 焊 接 钢 管 ) 。主 要 用 于 矿 山 压 风 、排 水 、 轴 放 瓦 斯 用 直 缝 焊 接 钢 管 。其 代 表 材 质 ??? 、 级 钢 。?????( 低 height, deep understanding of "two" study and educati on on strengt heni ng educati on of party member s and cadre s and buildi ng a continge nt of cadre s with high quality, maintaini ng and devel opi ng the party' s advanced nature a nd purity of the sig nifica nce of practica l thought and acti on i nto Ce ntral and provi nci al requirements. Fir st, the "two" study and education, is conti nuously strengtheni ng the party's i de ological and pol itical constructi on of major de ployment. Attach importa nce to party ide ol ogy, is t he specialty of our part y, since the party's 18 distinct characteristi c of strictly a dmini stering the part y. XI Ge neral Secretary pointe d out that our party must improve its elf, the first task is to strengthen ideol ogical a nd political construction, the key is t he educati onal ma nagement of party member s and cadre s. At prese nt, the i deas a nd value s have become increasingly a ctive, s ocial t rends are largely stirri ng ble nd, cult ural excha nges a nd the com plexity of the situati on, drove, some party member s ' ide ologi cal and political pr obl ems, there i s an urge nt nee d to strengt hen party ide ology : clearing t he fog, was centeri ng. Like, some belief confus ed, "three a confidence" ins ufficient, praised 行 定 规 照 按 会 大 表 代 使 。 制 任 责 长 善 完 全 健 利 权 的 督 监 和 理 管 与 参 工 职 教 障 保 , 设 建 主 民 园 儿 幼 进 推 了 为 Western value conce pt; s ome s pirit empty, not letter Marty letter ghosts; s ome political disci pline relaxation, i n party not statements party, a nd not love part y, and not nur sing part y, and not for party, eve n de nied party of some most basi c of principles and position; s ome orga nization dis cipline lax , not by pr ovide s partici pate in party of organise d, not completed party distri buti on of task, not by pa rty of organizati on pri nci ples do; some eg oism seri ous , and pe ople ra ce Le e, and self -dealing ; some depre sse d, and esca pe res ponsi bility, Omissi on, not a s good as s ome moral de cline, violati ng public moralit y, profes sional ethi cs and family virtues, not per sonal morality; s ome honesty a nd self-dis cipli ne aware nes s is not strong, with no fear, lawle ssne ss, a buse, and corrupti on am ong p olitica l, and so on. T hese problems, after all, and ignore the Constitution Party rule s, ignore adva nce d the ory, and lack of se nse of consci ousne ss, consci ousnes s, pi one er of the party has a lot to do wit h it. Thoug ht, belief and faith, stick t o the s piritual purs uit of Communists , has al ways bee n the Communists to s ettle down at all. "Two" study and educati on, is t o ena ble ea ch party to party rules et che d in the heart of the party Constituti on, a nd spe ech into a s eries of powerful wea pon, cl earing the barriers a nd gai n the fetters of the mind, improve t he ide ologi cal and political qualit y, wort hy of the glori ous title of the party member s. Second, the "two" study and educati on, compre he nsively strengt hen t he construction of grass-r oots party organizati ons a nd party members is a n importa nt ... Awake, our party members and party orga nizations, e spe cially at the grassr oots lev el, some of the party member's qual ity is not high, lax di sci pline and some primary party organizati ons are weak and lax, wi ped ou t some grassroots ca dres as, cha os as, t hick friends, eati ng, a nd s o on. The se pr oblems are l ike 3 This Conference is by muni cipal Sta ndi ng Committee research deci de d hel d of, main task is i n-dept h learni ng impleme nt XI G eneral Se cretary on "tw o learn a do" learni ng educati on of important i ndicates s pirit and provi ncial Se cretary XXX im portant spee ch spirit, a ccordi ng to ce ntral de ployment and pr ovincial requirements , o n I city "two lear n a do" learning e ducation work for arra ngements depl oyment, educati on g uide General mem bers further firm ide al faith, and keep on party loyalty, a nd s et breeze uprig ht, and courage to play as, for in province first full built well -off social, a nd Building higher level s of ecologi cal vitality city pr ovide a strong organizati onal g uarantee of happine ss. All par ty members in t he "Constituti on Party rules, series of spee che s, be qual ified party member s" education, Party Ce ntral Committ ee to deepen the inner-party education, adva nci ng the compre hens ive yet anot her important practi ce i n strictly admi nistering t he part y, is to promot e the inner-party education from "key minority" to the vast number of party members expa nde d, from the concentration of important measure s to extend educati on to reg ular educati on, i s leadi ng the task of party buil ding this year. This ye ar, the XI General Secretary on many occasi ons "two" study and educati on is sue d instructi ons, pr ofoundly il lustrates t he sig nificance of e ducation, brill iantly descr ibes t he overall objective s, ba sic re quireme nts and main ta sks of e ducation, made clear that t he main re spons ibility of the hea d of the party orga nization at all level s and s hall carry out, poi nt in t he right directi on for t he us to carry out study and educati on, provide the fundame ntal follow. On April 6 , Li u Yunshan, Comrade Z hao Leji i n Central "two" Forum on e ducational work , a careful de ployment of this w or k, put forwar d a cl ear requirement. On A pril 1 3, the Party S ecretar y, Xi e Fuz han, Direct or of the provi ncial pe ople' s Congres s, the provi nce' s "two" study educational Confere nce, made s pe cif ic arrangeme nts to carry out study and educati on i n the provi nce . We wa nt to s eriously study le d And fur ther implementati on. Party accor ding to t he s pirit of the Ce ntral and provi ncia l requirements, base d on act ual city, res earch has devel ope d a "two" educati onal programmes a nd st udy contents s pe cific pr ogrammes, we wa nt to pay spe cial attenti on t o follow -up. Now, I make a few remarks. First, dee peni ng understanding, e nha nci ng grasp "two" e ducati ona l responsibility since the party's 18, Comrade XI Jinping as G eneral Se cretary of the CPC Central Committee made a series of major de ployment ar ound the party's constructi on, maki ng a series of punch, constr ucti on of a ne w political style s and t he aspirations of the Party greatly condensed. "Two" study a nd e ducat ion, reflects the i nterlocking, step by ste p, further promote t he comprehensive strictly admi nistering the party's firm determinati on a nd politica l will, to pus h forward t he "four comprehensive" strategy is of great signifi cance. We should be s upported by pol itical a nd overall 压流体输送用大直径电焊钢管) 。主要用于输送水、污水、煤气、空气、采暖蒸汽 等 低 压 流 体 和 其 它 用 途 。 其 代 表 材 质 ??? 级 钢 。 ?? ??????( 机 械 结 构 用 不 锈 钢 焊 接 钢 管 ) 。主 要 用 于 机 械 、汽 车 、 自 行 车 、 家 具 、 宾 馆 和 饭 店 装 饰 及 其 他 机 械 部 件 与 结 构 件 。 其 代 表 材 质 ???? 、 ????? 、 ?????? 、 ?????? 、 ????????? 等 。 ?? ???????( 流 体 输 送 用 不 锈 钢 焊 接 钢 管 ) 。主 要 用 于 输 送 低 压 腐 蚀 性 介 质 。 代 表 材 质 为 ???? 、 ???? 、 ?????? 、 ???? 、 ????????? 、 ???????????? 等 。 ? 钢 管 管 件 ? 钢管是指两端开口并具有中空断面,其长度与周边之比较大的钢材,按生产 方法可分为无缝钢管和焊接钢管,钢管的规格用外形尺寸(如外径或边长)及壁 厚表示,其尺寸范围很广,从直径很小的毛细管直到直径达数米的大口径管。钢 管可用于管道、热工设备、机械工业、石油地质勘探、容器、化学工业和特殊用 途。? 钢管的分类:钢管分无缝钢管和焊接钢管(有缝管)两大类。按断面形状又 可分为圆管和异形管,广泛应用的是圆形钢管,但也有一些方形、矩形、半圆形、 六角形、等边三角形、八角形等异形钢管。对于承受流体压力的钢管都要进行液 压试验来检验其耐压能力和质量,在规定的压力下不发生泄漏、浸湿或膨胀为合 格 , 有 些 钢 管 还 要 根 据 标 准 或 需 方 要 求 进 行 卷 边 试 验 、 扩 口 试 验 、 压 扁 试 验 等 。 ?? ?、 按 生 产 方 法 分 类 ? ( ? ) 无 缝 钢 管 热 轧 管 、 冷 拔 管 、 挤 压 管 、 顶 管 、 冷 轧 管 、 ? ( ?) 焊 管 ? ( ? ) 按 工 艺 分 电 弧 焊 管 、 电 阻 焊 管 ( 高 频 、 低 频 ) 、气焊管、炉焊管? ( ? ) 按 焊 缝 分 直 缝 焊 管 、 螺 旋 焊 管 ? ?、 按 断 面 形 状 分 类 ? ( ? )简 单 断 面 钢 管 圆 形 钢 管 、方 形 钢 管 、椭 圆 形 钢 管 、三 角 形 钢 管 、六 角 形钢管、菱形钢管、八角形钢管、半圆形钢圆、其他