Description
Kinds of pipes:
1 Straight-seam pipe, spiral welded
pipe:
Welding method: electric arc weld,
ERW (high frequency, low frequency), gas-welding, continuous
furnace welding.
1.1 Longitudinal electric resistance
welded steel tubes: material: *8F, *8, *0F, *0, *5F, *5, *0, Q**5,
Q**5A, Q**5B, Q**5, Q**5B. Specification: OD.****8, WT.
0.***3.0.
1.2 Welded stainless steel pipes for
liquid delivery: material:
1Cr*8Ni9,0Cr*8Ni9(**4),*0Cr*8Ni*0(**4L),0Cr*5Ni*0(**0S),0Cr*7Ni*2Mo2(**6),*0Cr*7Ni*4Mo2(**6L),0Cr*8Ni*0Ti(**1).
The ones in the brackets are that of American standard.
Specification: OD.****0, WT. 0.***6。
1.3 Stainless welded pipe for
mechanical structure: material: 1Cr*8Ni9, 0Cr*8Ni9 (**4),
*0Cr*8Ni*0 (**4L), 0Cr*8Ni*0Ti (**1). The ones in the brackets are
that of American standard. Specification: OD.****0, WT.
0.***6.
1.4 Welded pipe for low-pressure
fluid delivery: material Q**5A, Q**5B, Q**5A, Q**5B, Q**5A, Q**5B,
Q**5A, Q**5B. Specification: OD: *7.*****6, WT.***5.
2 Seamless pipe
2.1 Stainless steel seamless pipe for
fluid delivery: material
1Cr*8Ni9,0Cr*8Ni9(**4),*0Cr*8Ni*0(**4L),0Cr*5Ni*0(**0S),0Cr*7Ni*2Mo2(**6),*0Cr*7Ni*4Mo2(**6L),0Cr*8Ni*0Ti(**1).
The ones in the brackets are that of American standard.
Specification: OD. ****6, WT. 0.****5。
2.2 Seamless pipe for low temperature
pipeline: material: *6MnDG, *0MnDG, *9DG, *9Mn2VDG, *6NiMoDG.
Specification: OD.****6, WT. 0.****0.
2.3 Cold draw seamless square tube,
rectangular tube, shaped tube: material *0, *0, *5, *5, Q**5, Q**5,
Q**5, Q**5, Q**5, Q**0, Specification: size: *****0, WT.
0.**2.5.
