法兰球(qiu)阀(fa)是(shi)石(shi)油化(hua)工(gong)装(zhuang)置(zhi)(zhi)中量大面广的(de)重(zhong)要压力管道(dao)元件，它具有截断、调节、导流、防止逆流、稳压、分(fen)流或溢流、泄(xie)压等功能；阀(fa)门(men)(men)也是(shi)管路中较(jiao)复杂的(de)元件，它一般(ban)由多个(ge)零部(bu)件装(zhuang)配而成(cheng)，结构复杂、技术含量较(jiao)高(gao)。阀(fa)门(men)(men)的(de)应用(yong)极广，在各(ge)类石(shi)油化(hua)工(gong)和(he)化(hua)工(gong)装(zhuang)置(zhi)(zhi)中，管道(dao)材料费用(yong)约占(zhan)项目(mu)总(zong)投资的(de)15%~20%，而阀(fa)门(men)(men)的(de)投资费用(yong)又约占(zhan)配管总(zong)费用(yong)的(de)50%以(yi)上，其中各(ge)种(zhong)类型阀(fa)门(men)(men)的(de)比例(li)不(bu)尽相同，以(yi)炼油装(zhuang)置(zhi)(zhi)为例(li)，各(ge)种(zhong)类型阀(fa)门(men)(men)在装(zhuang)置(zhi)(zhi)内占(zhan)阀(fa)门(men)(men)总(zong)数(shu)的(de)比例(li)分(fen)别为：闸阀(fa)80%、截止阀(fa)8%、止回阀(fa)6%，这三种(zhong)阀(fa)在石(shi)油化(hua)工(gong)生产装(zhuang)置(zhi)(zhi)中是(shi)应用(yong)较(jiao)多的(de)阀(fa)门(men)(men)，其他(ta)阀(fa)门(men)(men)占(zhan)6%，阀(fa)门(men)(men)投资占(zhan)装(zhuang)置(zhi)(zhi)的(de)5%~8%。以(yi)250万(wan)吨/年常减压装(zhuang)置(zhi)(zhi)和(he)140万(wan)吨/年催化(hua)裂化(hua)装(zhuang)置(zhi)(zhi)为例(li)，阀(fa)门(men)(men)规格占(zhan)阀(fa)门(men)(men)总(zong)个(ge)数(shu)的(de)比例(li)为：DN≥4003%，DN150~35012%，DN50~10025%，DN≤4060%。浙江万(wan)联阀(fa)业有限公司(si)致(zhi)力于提供球(qiu)阀(fa)产品，有想法可以(yi)来我司(si)咨(zi)询！甘肃美标球(qiu)阀(fa)

化(hua)(hua)工(gong)(gong)部球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)适用(yong)(yong)场所化(hua)(hua)工(gong)(gong)部球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)诸多独特的(de)(de)(de)特点决定了球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)的(de)(de)(de)使(shi)用(yong)(yong)场合(he)相对(dui)较广，通(tong)(tong)常，在(zai)(zai)(zai)(zai)双位调节(jie)、密封性能(neng)严(yan)格(ge)、泥(ni)浆、磨损、缩口(kou)通(tong)(tong)道、启(qi)闭动作迅速(su)（1/4转启(qi)闭）、高(gao)压截止（压差(cha)大(da)）、低噪声(sheng)、有(you)气穴和气化(hua)(hua)现(xian)象、向大(da)气少量渗漏，操(cao)作力矩小、流体阻力小的(de)(de)(de)管(guan)(guan)路(lu)系(xi)统(tong)中，推荐使(shi)用(yong)(yong)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)。化(hua)(hua)工(gong)(gong)部球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)也适用(yong)(yong)于轻(qing)型结构、低压截止（压差(cha)小）、腐蚀(shi)性介(jie)质的(de)(de)(de)管(guan)(guan)路(lu)系(xi)统(tong)中。在(zai)(zai)(zai)(zai)低温（深冷）装置(zhi)和管(guan)(guan)路(lu)系(xi)统(tong)中也可选用(yong)(yong)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)。在(zai)(zai)(zai)(zai)冶(ye)金(jin)行业的(de)(de)(de)氧(yang)气管(guan)(guan)路(lu)系(xi)统(tong)中，需(xu)使(shi)用(yong)(yong)经过严(yan)格(ge)脱(tuo)脂处理的(de)(de)(de)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)。在(zai)(zai)(zai)(zai)输油管(guan)(guan)线(xian)和输气管(guan)(guan)线(xian)中的(de)(de)(de)主管(guan)(guan)线(xian)需(xu)埋设在(zai)(zai)(zai)(zai)地下时，需(xu)使(shi)用(yong)(yong)全通(tong)(tong)径焊接(jie)式球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)。在(zai)(zai)(zai)(zai)要求具(ju)有(you)调节(jie)性能(neng)时，需(xu)选用(yong)(yong)带(dai)V形(xing)开口(kou)结构的(de)(de)(de)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)。在(zai)(zai)(zai)(zai)石(shi)油、石(shi)油化(hua)(hua)工(gong)(gong)、化(hua)(hua)工(gong)(gong)、电(dian)力、城市(shi)建设中，工(gong)(gong)作温度在(zai)(zai)(zai)(zai)200度以上的(de)(de)(de)管(guan)(guan)路(lu)系(xi)统(tong)可选用(yong)(yong)金(jin)属(shu)对(dui)金(jin)属(shu)密封的(de)(de)(de)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)。北京化(hua)(hua)工(gong)(gong)部球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)价格(ge)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)产品，就(jiu)选浙(zhe)江(jiang)万联阀(fa)(fa)(fa)业有(you)限公司，用(yong)(yong)户的(de)(de)(de)信(xin)赖之选，欢迎(ying)新老客户来(lai)电(dian)！

电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)是一(yi)(yi)种(zhong)(zhong)(zhong)常(chang)见的(de)(de)(de)(de)(de)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)类型(xing)(xing)，广(guang)泛应(ying)用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)工(gong)(gong)业、化工(gong)(gong)、石油(you)、制(zhi)药等(deng)领域的(de)(de)(de)(de)(de)自动(dong)化控制(zhi)系统(tong)中(zhong)(zhong)。它(ta)具有(you)(you)开(kai)关(guan)(guan)迅速、密封(feng)效果好(hao)、使用(yong)(yong)(yong)(yong)(yong)寿(shou)命长、操(cao)作方(fang)便等(deng)优点。本文简单(dan)的(de)(de)(de)(de)(de)介绍七种(zhong)(zhong)(zhong)常(chang)用(yong)(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)一(yi)(yi)、开(kai)关(guan)(guan)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)开(kai)关(guan)(guan)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)是一(yi)(yi)种(zhong)(zhong)(zhong)可快速开(kai)关(guan)(guan)的(de)(de)(de)(de)(de)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)，其(qi)结(jie)(jie)构(gou)简单(dan)，维护(hu)方(fang)便。该(gai)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)适用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)水、气(qi)(qi)(qi)、油(you)等(deng)流(liu)(liu)体(ti)的(de)(de)(de)(de)(de)开(kai)关(guan)(guan)控制(zhi)，可用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)管道和(he)(he)设(she)备的(de)(de)(de)(de)(de)进(jin)出(chu)口(kou)，也可用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)介质(zhi)流(liu)(liu)向的(de)(de)(de)(de)(de)切换。二、调(diao)(diao)节(jie)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)调(diao)(diao)节(jie)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)是一(yi)(yi)种(zhong)(zhong)(zhong)可精确(que)调(diao)(diao)节(jie)流(liu)(liu)量的(de)(de)(de)(de)(de)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)，其(qi)结(jie)(jie)构(gou)与开(kai)关(guan)(guan)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)类似，但增加(jia)了调(diao)(diao)节(jie)功能。该(gai)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)适用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)需(xu)要对流(liu)(liu)量进(jin)行(xing)精确(que)调(diao)(diao)节(jie)的(de)(de)(de)(de)(de)场(chang)合，如(ru)温(wen)度、压力(li)等(deng)工(gong)(gong)艺参(can)数的(de)(de)(de)(de)(de)控制(zhi)。三、防(fang)爆(bao)(bao)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)防(fang)爆(bao)(bao)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)是一(yi)(yi)种(zhong)(zhong)(zhong)具有(you)(you)防(fang)爆(bao)(bao)功能的(de)(de)(de)(de)(de)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)，适用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)易(yi)燃(ran)易(yi)爆(bao)(bao)气(qi)(qi)(qi)体(ti)的(de)(de)(de)(de)(de)场(chang)合。它(ta)的(de)(de)(de)(de)(de)电(dian)(dian)(dian)机(ji)采(cai)用(yong)(yong)(yong)(yong)(yong)防(fang)爆(bao)(bao)型(xing)(xing)电(dian)(dian)(dian)机(ji)，具有(you)(you)较(jiao)高(gao)(gao)(gao)的(de)(de)(de)(de)(de)安全(quan)性(xing)能。该(gai)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)适用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)石油(you)、化工(gong)(gong)等(deng)领域中(zhong)(zhong)的(de)(de)(de)(de)(de)易(yi)燃(ran)易(yi)爆(bao)(bao)气(qi)(qi)(qi)体(ti)输送(song)和(he)(he)排放(fang)过程。四(si)、高(gao)(gao)(gao)温(wen)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)高(gao)(gao)(gao)温(wen)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)是一(yi)(yi)种(zhong)(zhong)(zhong)适用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)高(gao)(gao)(gao)温(wen)工(gong)(gong)况(kuang)的(de)(de)(de)(de)(de)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)，其(qi)结(jie)(jie)构(gou)特(te)殊，采(cai)用(yong)(yong)(yong)(yong)(yong)高(gao)(gao)(gao)温(wen)材质(zhi)，能够(gou)在(zai)高(gao)(gao)(gao)温(wen)环(huan)境下正(zheng)常(chang)工(gong)(gong)作。该(gai)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)适用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)高(gao)(gao)(gao)温(wen)气(qi)(qi)(qi)体(ti)、液体(ti)的(de)(de)(de)(de)(de)输送(song)和(he)(he)排放(fang)过程，如(ru)发电(dian)(dian)(dian)厂(chang)、冶炼厂(chang)等(deng)高(gao)(gao)(gao)温(wen)工(gong)(gong)艺流(liu)(liu)程。五、防(fang)腐(fu)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)防(fang)腐(fu)型(xing)(xing)电(dian)(dian)(dian)动(dong)球(qiu)(qiu)(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)是一(yi)(yi)种(zhong)(zhong)(zhong)适用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)强腐(fu)蚀性(xing)介质(zhi)的(de)(de)(de)(de)(de)阀(fa)(fa)(fa)(fa)(fa)(fa)门(men)(men)，其(qi)材质(zhi)和(he)(he)结(jie)(jie)构(gou)经过特(te)殊处(chu)理。

球阀(fa)(fa)(fa)规格书(shu)的(de)(de)内(nei)容(rong)(rong)通用(yong)阀(fa)(fa)(fa)门规格书(shu)应包括下列内(nei)容(rong)(rong)：1）采用(yong)的(de)(de)标(biao)准代号(hao)；2）阀(fa)(fa)(fa)门的(de)(de)名称(cheng)(cheng)、公称(cheng)(cheng)压力、公称(cheng)(cheng)直径；3）阀(fa)(fa)(fa)体(ti)材(cai)(cai)料(liao)、阀(fa)(fa)(fa)体(ti)对(dui)外(wai)连(lian)接方(fang)式；4）阀(fa)(fa)(fa)座密(mi)封面材(cai)(cai)料(liao)；5）阀(fa)(fa)(fa)杆与阀(fa)(fa)(fa)盖结构、阀(fa)(fa)(fa)杆等内(nei)件(jian)材(cai)(cai)料(liao)，填(tian)料(liao)种类(lei)；6）阀(fa)(fa)(fa)体(ti)中(zhong)法(fa)(fa)兰(lan)垫(dian)片种类(lei)、紧固件(jian)结构及材(cai)(cai)料(liao)；7）设计者(zhe)提(ti)出的(de)(de)阀(fa)(fa)(fa)门代号(hao)或标(biao)签号(hao)；8）其它(ta)特殊要(yao)(yao)求(qiu)。国内(nei)现行(xing)的(de)(de)阀(fa)(fa)(fa)门型号(hao)表示方(fang)法(fa)(fa)，对(dui)阀(fa)(fa)(fa)杆及内(nei)件(jian)材(cai)(cai)料(liao)、填(tian)料(liao)种类(lei)、中(zhong)法(fa)(fa)兰(lan)(阀(fa)(fa)(fa)盖法(fa)(fa)兰(lan))垫(dian)片种类(lei)、中(zhong)法(fa)(fa)兰(lan)紧固件(jian)材(cai)(cai)料(liao)种类(lei)等均(jun)无规定，不能说(shuo)明阀(fa)(fa)(fa)门的(de)(de)属性。浙江(jiang)万联阀(fa)(fa)(fa)业有(you)限公司为(wei)您提(ti)供 球阀(fa)(fa)(fa)产(chan)品，有(you)需要(yao)(yao)可(ke)以联系我司哦(e)！

美标气(qi)(qi)(qi)动(dong)(dong)(dong)球(qiu)阀气(qi)(qi)(qi)动(dong)(dong)(dong)执(zhi)(zhi)行(xing)机(ji)构(gou)选(xuan)择：双作(zuo)(zuo)用(yong)活(huo)(huo)塞(sai)式(shi)气(qi)(qi)(qi)动(dong)(dong)(dong)执(zhi)(zhi)行(xing)机(ji)构(gou)，主(zhu)要有(you)气(qi)(qi)(qi)缸(gang)，端(duan)盖，活(huo)(huo)塞(sai)。齿(chi)(chi)轮(lun)轴(zhou)。限位(wei)块，调(diao)节(jie)螺钉，指示(shi)器(qi)等零件组成。用(yong)压(ya)缩空气(qi)(qi)(qi)作(zuo)(zuo)为(wei)动(dong)(dong)(dong)力，推动(dong)(dong)(dong)活(huo)(huo)塞(sai)运动(dong)(dong)(dong)。活(huo)(huo)塞(sai)上(shang)集(ji)成了齿(chi)(chi)条带(dai)(dai)动(dong)(dong)(dong)齿(chi)(chi)轮(lun)轴(zhou)转动(dong)(dong)(dong)90°，进而(er)带(dai)(dai)动(dong)(dong)(dong)球(qiu)阀的(de)开关动(dong)(dong)(dong)作(zuo)(zuo)。单(dan)作(zuo)(zuo)用(yong)活(huo)(huo)塞(sai)式(shi)气(qi)(qi)(qi)动(dong)(dong)(dong)执(zhi)(zhi)行(xing)机(ji)构(gou)，主(zhu)要在活(huo)(huo)塞(sai)和端(duan)盖间加入复(fu)位(wei)弹簧，可以(yi)在气(qi)(qi)(qi)源压(ya)力故障时(shi)依(yi)靠弹簧的(de)推动(dong)(dong)(dong)力使球(qiu)阀复(fu)位(wei)，保持打开或(huo)关闭的(de)位(wei)置，保证工艺系统的(de)安(an)全。所以(yi)选(xuan)用(yong)单(dan)作(zuo)(zuo)用(yong)气(qi)(qi)(qi)缸(gang)是(shi)要选(xuan)择好球(qiu)阀是(shi)常开或(huo)常闭状态(tai)。气(qi)(qi)(qi)缸(gang)现在主(zhu)要种(zhong)(zhong)类有(you)GT气(qi)(qi)(qi)缸(gang)，AT气(qi)(qi)(qi)缸(gang)，AW气(qi)(qi)(qi)缸(gang)等。GT出(chu)现较早，AT算是(shi)GT的(de)改(gai)进型，是(shi)现在主(zhu)流产品(pin)(pin)，可以(yi)与球(qiu)阀免支(zhi)架安(an)装(zhuang)(zhuang)，比支(zhi)架安(an)装(zhuang)(zhuang)更快捷，方(fang)便(bian)，也更加牢固。可以(yi)调(diao)整0°和90°位(wei)置，方(fang)便(bian)安(an)装(zhuang)(zhuang)各种(zhong)(zhong)电磁阀，行(xing)程开关，手(shou)轮(lun)机(ji)构(gou)附件。AW气(qi)(qi)(qi)缸(gang)主(zhu)要用(yong)于大口径球(qiu)阀，输出(chu)力大，采用(yong)活(huo)(huo)塞(sai)拨叉(cha)结构(gou)。浙江(jiang)万联阀业有(you)限公司为(wei)您提供(gong) 球(qiu)阀产品(pin)(pin)，欢迎您的(de)来电！黑(hei)龙江(jiang)高(gao)压(ya)球(qiu)阀定制

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一(yi)(yi) 设(she)计与制(zhi)造:API6D《管线(xian)(xian)阀(fa)(fa)门》API608《法(fa)兰、螺纹和(he)焊接(jie)(jie)(jie)(jie)连接(jie)(jie)(jie)(jie)的(de)(de)金属(shu)(shu)球(qiu)阀(fa)(fa)》ASMEB16.34《法(fa)兰、螺纹和(he)焊接(jie)(jie)(jie)(jie)连接(jie)(jie)(jie)(jie)的(de)(de)阀(fa)(fa)门》ANSI／AWWAC507《6英寸至(zhi)48英寸球(qiu)阀(fa)(fa)》BFCI70-2《控(kong)制(zhi)阀(fa)(fa)门阀(fa)(fa)座泄漏》MSSSP-72《法(fa)兰和(he)对(dui)焊连接(jie)(jie)(jie)(jie)的(de)(de)一(yi)(yi)般用球(qiu)阀(fa)(fa)》BS5351《石(shi)油、石(shi)化及相关工业(ye)用钢制(zhi)球(qiu)阀(fa)(fa)》BS6364《低温阀(fa)(fa)门》NACEMR0175《油田设(she)备用抗硫化应(ying)力裂纹的(de)(de)金属(shu)(shu)材(cai)料》GB／T12237《通用阀(fa)(fa)门法(fa)兰和(he)对(dui)焊连接(jie)(jie)(jie)(jie)钢制(zhi)球(qiu)阀(fa)(fa)》GB／T15185《铁制(zhi)和(he)铜制(zhi)球(qiu)阀(fa)(fa)》JB／T7745《管线(xian)(xian)球(qiu)阀(fa)(fa)》ISO5211《部分(fen)回转阀(fa)(fa)门驱动装置的(de)(de)连接(jie)(jie)(jie)(jie)》

二 连接(jie)端尺寸标准(zhun):ASMEB16.5《管(guan)道法(fa)(fa)(fa)(fa)(fa)兰(lan)和法(fa)(fa)(fa)(fa)(fa)兰(lan)管(guan)件》ASMEB16.47《大(da)(da)直径(jing)钢(gang)(gang)(gang)制(zhi)(zhi)(zhi)法(fa)(fa)(fa)(fa)(fa)兰(lan)NPS26至NPS60》API605《大(da)(da)直径(jing)碳钢(gang)(gang)(gang)法(fa)(fa)(fa)(fa)(fa)兰(lan)》MSSSP-44《钢(gang)(gang)(gang)制(zhi)(zhi)(zhi)管(guan)道法(fa)(fa)(fa)(fa)(fa)兰(lan)》ISO7005-1《金(jin)属法(fa)(fa)(fa)(fa)(fa)兰(lan)第1部分(fen)钢(gang)(gang)(gang)制(zhi)(zhi)(zhi)法(fa)(fa)(fa)(fa)(fa)兰(lan)》GB／T9112～9124《钢(gang)(gang)(gang)制(zhi)(zhi)(zhi)管(guan)法(fa)(fa)(fa)(fa)(fa)兰(lan)》GB／T13402《大(da)(da)直径(jing)碳钢(gang)(gang)(gang)管(guan)法(fa)(fa)(fa)(fa)(fa)兰(lan)》HG20592～20635《钢(gang)(gang)(gang)制(zhi)(zhi)(zhi)管(guan)法(fa)(fa)(fa)(fa)(fa)兰(lan)》SH3406《石油化工(gong)钢(gang)(gang)(gang)制(zhi)(zhi)(zhi)管(guan)法(fa)(fa)(fa)(fa)(fa)兰(lan)》JB／T74～90《管(guan)路法(fa)(fa)(fa)(fa)(fa)兰(lan)》JISB2238《钢(gang)(gang)(gang)制(zhi)(zhi)(zhi)管(guan)法(fa)(fa)(fa)(fa)(fa)兰(lan)通则》ASMEB16.25《对(dui)接(jie)焊端》ASMEB16.11《承(cheng)插焊和螺纹连接(jie)的(de)锻造管(guan)件》BS12627《工(gong)业阀(fa)门(men)钢(gang)(gang)(gang)制(zhi)(zhi)(zhi)阀(fa)门(men)的(de)对(dui)焊端》BS12760《阀(fa)门(men)钢(gang)(gang)(gang)制(zhi)(zhi)(zhi)阀(fa)门(men)的(de)承(cheng)插焊端》

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