Precision seamless steel pipes for machinery and automobiles

Application 

Backbone of Automobile and rear axle tube.

Manufacturing and process of precision

equipment , instrument and mechanical part.

Production Standard , Steel No.

DIN2391 St35St45t52

ASTM A519 1010，1020 ，1025，1035 ，1045

ASTM A513 1010，1020 ，1025，1035 ，1040

BS6323-4 CF5，CFS3A，CFS4-11

EN10305-1 E215，E235，E355

JIS G 3441 SCM 415TK ，SCM 430 TK，SCM 440 TK

GB/T3639 10，20,35，45

GB8713 H8，H9H10

GB/T 8162 10,20,16Mn,35, 45, 20CrMo,

Delivery Condition 

GBK，BKS .BK ，BKW .NBK

Inspections and tests performed 

Chemical Composition , Mechanical Properties , Visual

appearance and dimensions Test , NDT , Grain Size Test.

Surface treatment 

Oi-dip , varnish

Size Range 

O.D 12.7-110mm

W.T 1.2-10mm