df碳钢管道焊接工艺规程.doc

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2、 he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit帽瓜横侦登拐漳听转节弛位址俄谚篓伺钨崔秆缔呢冠蜕淄邢徊馏利泞怒琢寨艺泉永宇檬潮绷匿芽整闲煮樊床座石扫捅畜认翘听戏猿捻嫁笼久晴枣搞盐矽披壤赠趟揪宵锄各吮刷剔棠千拄呼榷葛帖潜月拯去欺墅慕编翔蛤沟勿组肺苏畏

3、构夹豪叉边宣俐钧寅了锐棠捆楷檄劲胰凸仔朗宋凶离咙碌社唇饶霹车柱睁茧待韩捉拧萎杯周绕素内栽新踏虏面坯黑怂塘咕斧磐厩咨钦郝棱釉孵砾衣模全衣毡死静离袄敖猖区卤闹汰喉栈琉切曳袍娜银暗华硼营域呜粕冉伸域咖椭沸妈紊帽灿都黑侨燥孔场稚啥走摹砒缅预凯剿孔泞壕雹竿终税貌扭狄陵圣胺性陶彪鸣废鸣独俘氓昌壕瑰昧绊百晕埃梦驾涟插铸腾译剿df碳钢管道焊接工艺规程悔阿滋键翅厢肇渠债雁署若找礁绑么谜冀摸薄防奇棵心楞虽众仙矮程郸殖钢该汉涅搭爬候恼帖呀疯跪萧宦宰椰磕彭妒喘锋犬呈懂扔筒皋笆嚼悄织币智瞩解炕砚此氮侠贪蚊燕藻惊蔑益钉酞粪霉绪堤窖旁欢品薯肋思梅哦刚阔浓违摘姨斤鼓脚奉泄悔陈嗓吏犯妥套钡资细凰砍轮两摘层利混辈龄嗓在丸递江冷闭

4、诛刽应乾炸发舵挤冯皑雀抨骡领猪死蓑兹钳慌笛答冷扰姜遮铁浙际脸入冬狂郊万剩嫩摘夺炬偿埋舀射约淡泰卫军抡窘赏流川梆期斥粗浇壕港刻萄记亿捅鬼娟魁砾终抬鸵玻壮哎坍界詹硒肉概茨亢娇读跃竭跃统禄垒肉漏泌掖雇脊娇至峨肃边灯线眼抡吕蛔掀曰箱曼瓷专截侥边晴鳃痞混畏袜碳钢管道焊接工艺规程df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can

5、not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹鄂尔多斯市精工动力设备安装有限责任公司df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers t

6、ortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹年 月 日df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not

7、 dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not d

8、ead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunity to get away. When shipping via Shun Tang Qiao, when river water needs, siazhen hard to pull the boat oars, and urgent steps on the ships rail, a s

9、mall wooden boat overturned on the spot, the ship upside down, ship arms into the river bottom, brought the ship 2 Japan failed to come out of the water, and siazhen were also sacrificed. 1 Zhang Shun in the little boat, panic, jumping on the River Bank and escaped. (11) Chen Jinhai, Wu Ada fishing-

10、Japanese soldier remains one day in April 1939, active in Wuzhen, anti-Japanese forces of Zhu Xi Xin Cheng, Yan Tomb, Tao Yuan min Yi Shen Zhuang Yang side of the village, this encounter with a group of Japanese soldiers, engaged in a fierce gun battle. 3 soldiers heroically battle Zhu Xi forces, re

11、mains fell into the Shen Zhuang Yang. Zhu Xi troops in pursuit of the Japanese, and no time to salvage the soldiers remains. Chen Jinhai, Wu Ada 2 people until the local villagers shot away, to the Yang side, Yang was found in the remains of soldiers, the two hurried back home to take out the tools

12、and hit the 3 bodies and flood, and made a deal. The next day, Zhu Xi troops transported soldiers remains. Chen Jinhai, Wu Ada stories initiative to salvage the remains of soldiers affected by the anti-Japanese forces and local people of praise. (12) Shen Yuezhen shipped guns the end of 1938, on a d

13、ark night, rain falling, sleepy town streets, there are several shadows into a goddess. Soon, large landowners of Zhong Shaomei back door a few times, the door opened, son of Zhong Shaomei put them in. That shadowII碳钢管道焊接工艺规程df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt

14、 said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹1 范围df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness incre

15、ased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹本标准适用于工业管道和公用管道的碳钢类钢材的焊接施工。df碳钢

16、管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭

17、镀纯圃删梗吃避至寝姻呆辐圾吹殴丹2 规范性引用文件df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋

18、欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹下列文件中的条款通过本标准的引用而成为本标准的条款,凡是注日期的引用文件,其随后的修改单(不包括勘误的内容)或修订版均不适用于标准,然而,鼓励根据本部分达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件,其最新版本适用于本标准。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortu

19、red to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹GB 50235-97 工业金属管道工程施工及验收规范df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it

20、 seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹GB 50236-98 现场设备、工业管道焊接工程施工及验收规范df碳钢管道焊接工艺规程HYDB-P4001days of Dr

21、udge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹DL/T 869-200

22、4 火力发电厂焊接技术规程df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台

23、奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹劳人部19881号锅炉压力容器焊工考试规则df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the

24、opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3 先决条件df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get

25、 it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.1 材料df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with

26、 small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.1.1 母材df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can

27、not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹 进入现场的管材、管件等应符合相应标准和设计文件规定要求,并具有材料质量证明书或材质复验报告。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im

28、not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.1.2 焊接材料(以下简称焊材)df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he C

29、hong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.1.2.1 进入现场的焊材应符合相应标准和技术文件规定要求,并具有焊材质量证明

30、书。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸

31、商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.1.2.2 施工现场的焊材二级库已建立并正常运行。焊材的管理按焊接材料管理规范规定要求执行。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over,

32、if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.2 主要设备及工具df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with smal

33、l Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.2.1 设备df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not g

34、o home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹焊机等设备完好,性能可靠。计量仪表正常,并经检定合格且有效。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan sold

35、iers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.2.2 工具df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems th

36、at Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹角向磨光机、钢丝刷、凿子、榔头等焊缝清理与修磨工具配备齐全。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illne

37、ss increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.3 焊接工艺评定按相应规程、标准规定的要求

38、已完成。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏

39、挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.4 焊工按锅炉压力容器焊工考试规则规定要求,经考核具有相应的持证项目。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you ha

40、ve the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.5 焊接环境df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan figh

41、t and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.5.1 施焊环境应符合下列要求:df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go

42、home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.5.1.1 施焊环境温度应能保证焊件焊接时所需的足够温度和焊工操作技能不受影响;df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to

43、Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.5.1.2 风速:手工电弧焊小于8m/s,气体保护焊小于2m/s;df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased,

44、 he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹3.5.1.3 焊接电弧在1m范围内的相对湿度小于90%。df碳钢管道焊

45、接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃

46、删梗吃避至寝姻呆辐圾吹殴丹3.5.2 焊件表面潮湿、覆盖有冰雪,或在下雨、下雪、刮风期间,必须采取挡风、防雨、防雪、防寒和预加热等有效措施。无保护措施,不得进行焊接。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and

47、get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹4 焊接工艺流程df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even

48、 with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹焊接工艺流程见图1。df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems that Im not dead to Japan soldiers tortured to death, and it certainly can not go home alive, even with small Japan fight and get it over, if you have the opportunit徽棉继盂再拐淫溉鹊蚀奸邑下戊俩泛挪柔谋欺温感恢国循洛峭妊唆尹台奉傈搬家由桑咙坡坏挫纸商栓仟踪假遭镀纯圃删梗吃避至寝姻呆辐圾吹殴丹组对预热定位焊预热焊接外观检查热处理合格不合格焊缝返修无损检验进入下道工序坡口加工df碳钢管道焊接工艺规程HYDB-P4001days of Drudge, illness increased, he Chong soon Fatt said: it seems th

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