English | português | русский| Español

Our company

hebeihaihao

Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


Read More About Haihao Group

GOST 20295-85 K52 Seamless Steel Pipe


GOST 20295-85 K52 Seamless Steel Pipe

Steel grade Chemical composition,%,max
C Mn Si S P Cr Ni Cu V
Carbon steel 0.22 0.65 0.37 0.04 0.035 0.25 0.3 0.3
Low alloy steel 0.2 1.65 0.6 0.035 0.033 0.8 0.3 0.3 0.1

 

Steel grade Tensile strength,MPa Yield strength,MPa Elongation,%
K34 334 206 24
K38 373 235 22
K42 412 245 21
K50 491 343 20
K52 510 353 20
K55 540 373 20

<< Back to Steel pipes


Haihao Group Twitter haihao group youtube haihao group facebook haihao group linkedin