How much do you know about pipe fittings

Pipe fittings standards and materials list1.Seamless steel pipe1.1 carbon steel pipe Common Standard: GB8163 87 GB3087 82 GB9948 88   Steel grade: 10 20  Corresponding ASTM material: A53-A A106-A A53-B A106-B  

1.2 low alloy steel pipe Common Standard: GB8163 87  Steel grade:16Mn  Corresponding ASTM material: A333-6  

1.3 alloy steel pipeCommon Standard: GB5310 85 GB9948 88  Steel grade: 15CrMo 12Cr1MoV 1Cr5Mo  Corresponding ASTM material: A335-P12 A335-P11 A335-P5  

1.4 stainless steel pipeCommon Standard: GB/T14976 94  Steel grade: 0Cr19Ni9 00Cr19Ni10 0Cr17Ni12Mo2 00Cr17Ni14Mo2  Corresponding ASTM material: A312-TP304 A312-TP304L A312-TP316 A312-TP316L  

2. Welded steel pipe 2.1 Carbon LSAW steel pipe Common Standard: GB/T3091-93 GB/T3092-93 GB/T13793-92 GB/T14980-94  Steel grade: Q235A/B  Corresponding ASTM material: API 5L B   

2.2 carbon SSAW steel pipeCommon Standard: SY/T5037 92 SY/T5038 92  Steel grade: Q235A/B  Corresponding ASTM material: API 5L B  

Common Standard: GB9711 88  Steel grade: S240 S290 S315 Corresponding ASTM material: API5L B API 5L X42 API 5L X46   2.3 stainless straight seam steel pipeCommon Standard: GB12771 91 HG20537.3/4 92  Steel grade: 0Cr19Ni9 00Cr19Ni10 0Cr17Ni12Mo2 00Cr17Ni14Mo2  Corresponding ASTM material: A312-TP304 A312-TP304L A312-TP316 A312-TP316L  

Size selection standardSeamless steel pipe and welded steel pipe: HG20553 93
SH3405 96  Stainless steel pipe: ANSI B36.10 ANSI B36.19

3 Butt welding pipe fittings3.1 seamless butt welding pipe fittingsCommon Standard: GB12459 90 HGJ514 87 SH3408 96  Steel grade: 20 16Mn 15CrMo 12Cr1MoV 1Cr5Mo 0Cr19Ni9 00Cr19Ni10 0Cr17Ni12Mo2 00Cr17Ni14Mo2Corresponding American standard: ANSI B16.9 ANSI B16.28 MSS SP-43  Corresponding ASTM materials: A234-WPB A420-WPL6 A234-WP12 A234-WP11 A234-WP5 A403-WP304 A403-WP304L A403-WP316 A403-WP316L (including elbow, tee joint, cross, reducing pipe, pipe cap, and stub ends)          

3.2 seam butt welding pipe fittingsCommon Standard: GB/T13401 92 HGJ528 90 SH3409 96  Steel grade: Q235A 20g 16MnR 0Cr19Ni9 00Cr19Ni10 0Cr17Ni12Mo2 00Cr17Ni14Mo2  Corresponding American standard: ANSI B16.9 ANSI B16.28  Corresponding ASTM materials: A234-WPB A420-WPL6 A403-WP304 A403-WP304L A403-WP316 A403-WP316L  Including (elbow, tee, cross, reducing pipe and pipe cap) 

4 Forged fittings4.1 Socket-welded fittings (including elbow, tee, cross pipe joint, movable joint, weld o-let and pipe cap)Common Standard: GB/T14383 93 HGJ10 88 Steel grade: 20 16Mn Corresponding American standard: ANSI B16.11 MSS SP-83 Corresponding ASTM materials: A105 A350-LF2 

4.2  threaded fittings (including elbow, tee, cross pipe joint, movable joint, weld o-let, pipe cap, pipe plug and inlet and outlet connector)Common Standard: GB/T14626 93 HGJ529 90  20 16Mn 15CrMo Steel grade: 12Cr1MoV 1Cr5Mo 0Cr19Ni9 00Cr19Ni10 0Cr17Ni12Mo2 00Cr17Ni14Mo2  Corresponding American standard: ANSI B16.11 MSS SP-83 MSS SP-97  Corresponding ASTM materials: A105 A350-LF2 A182-F12  A182-F11 A182-F5 A182-F304 A182-F304L A182-F316 A182-F316L       5 Flange5.1 welding plat flangeCommon Standard: GB9119 88 Steel grade: HG20593-97 JB/T81-94  20 16Mn 15CrMo 12Cr1MoV 1Cr5Mo 0Cr19Ni9 00Cr19Ni10 Corresponding American standard: ANSI B16.5 ANSI B16.47 API605 MSS SP-44  Corresponding ASTM materials: A105 A350-LF2 A182-F12 A182-F11 A182-F5 A182-F304 A182-F304L 

5.2 Slip-on neck flangeCommon Standard: GB9116 88 Corresponding American standard: SH3406 96Corresponding ASTM materials: HG20594 97 HG20616 97  

5.3 Slip-on neck butt welding flangeCommon Standard: GB9115 88 Corresponding American standard: SH3406 96 Corresponding ASTM materials: HG20595 97 HG20617 97 JB/T82 94.