亚洲欧洲精品成人久久曰影片,美女又黄又免费的视频,国产精品无码DVD在线观看,18GAY男同69亚洲帅男蓝宇

鋼制管件制造標(biāo)準(zhǔn)

1 GB12459鋼制對(duì)焊無(wú)縫管件Steel butt-welding seamless fittings

2 GB/T13401鋼板制對(duì)焊管件 Steel plate butt-welding fittings

3 GB/T14383 鍛鋼制承插焊管件 Forged Steel socket welding fittings 

4 GB/T14626 鍛鋼制螺紋管件 Forged Steel threaded fittings  

5 GB9112-9131 鋼制管法蘭及法蘭用墊片 Steel pipe flanges,and gaskets for flang 

6 SH3406 石油化工鋼制管法蘭 Steel pipe flange for petro-chemical    

7 SH3408 鋼制對(duì)焊無(wú)縫管件 Steel butt-welding seamless fittings

8 SH3409 鋼板制對(duì)焊管件 Steel plate butt-welding fittings     

9 SH3410 鍛鋼制承插焊管件 Forged steel socket welding fittings

10 HG/T21635 碳鋼、低合金鋼無(wú)縫對(duì)焊管件 Carbon steel，lowalloy steel seamless butt-welding fittings    

11 HG/T21631 鋼制有縫對(duì)焊管件 Steel seam butt-welding fittings

12 HG/T21634 鍛鋼制承插焊管件 Forged steel socket welding fittings      

13 HG20592-20635 鋼制管法蘭、墊片、緊固件 Steel pipe flanges,gaskets fasteners    

14 SY0510 鋼制對(duì)焊管件 Steel butt-welding fittings  

15 SY5257 鋼制彎管 Steel bent pipes     

16 DL/T695 電站鋼制對(duì)焊管件 Steel butt-welding fittings for power station     

17 DL/T515 電站彎管 Bent pipes for power station

18 GD87-1101 火力發(fā)電廠汽水管道零件及部件典型設(shè)計(jì)手冊(cè) Typital design manual of the steam and water piping composition and part for themal power factory  合金管件、合金彎頭、合金彎管、合金三通、合金管帽     

19 EJ/T404 壓水堆核電廠-回路系統(tǒng)無(wú)縫對(duì)接焊不銹鋼管件技術(shù)條件 Technical condition for the seamless butt-welding stainless steel fittings of circulation system 1 inpressure water reactor nuclear power factory

20 ANSI B16.9 工廠制造的鍛鋼對(duì)焊管件 Factory-made wrought steel butt welding fittings

21 ANSI B16.28 鍛鋼對(duì)焊短半徑彎頭和U形彎頭 Wrought steel butt welding short radius elbows and returns

22 ANSIB16.11承插焊和螺紋鍛鋼管件 Forged steel fittings,socket-welding and threaded

23 ANSIB16.5 管法蘭和法蘭配件 Pipe flanges and flanged fittings

24 MSS SP-43 鍛制不銹鋼對(duì)焊管件 Wrought stainless steel butt-welding fittings

25 MSS SP-79 承插焊異徑插入件 Socket-welding reducing inserts

26 MSS SP-83 承插焊和螺紋活接頭 Carbon steel pipe unions,socket-welding and threaded

27 JISB2311 通用鋼制對(duì)焊管件 Common steel butt-welding fittings

28 JISB2312 鋼制對(duì)焊管件 Steel butt-welding fittings

29 JISB2313 鋼板制對(duì)焊管件 Steel Plate butt-welding fittings

30 JISB2316 鋼制承接焊管件 Steel socket-welding fittings

31 DIN2605 鋼制對(duì)焊管件、彎頭和彎管 Steel butt-welding fittings,elbows and bent pipes

32 DIN2615 鋼制對(duì)焊管件、三通 Steel butt-welding fitting,tees

33 DIN2616 鋼制對(duì)焊管件、異徑管 Steel butt-welding fittings,reducers