1.seamless pipe:

size: φ10mm-φ630mm

material: 10# - 45# Q345 A, B, C, D 27SiMn 40Cr 40CrMn 20CrMn 30Mn

executive standard: GB8162 (structural pipe) GB8163 (fluid pipe) GB3087-99

(boiler pipe) GB5310-95 ( boiler pipe for high pressure) GB6479-2000

(fertilizer special pipe) GB9948-88 (petroleum cracked pipe) DIN17175-95

(German standard) ST45.8111 SA106B etc,foreign standard.

2.straight weld tubing,galvanized pipe;

size: φ10mm-φ630mm

material: Q195-Q235 16Mn Q345 A, B

3.welding square pipe/rectangular tube,galvanized square and

rectangular pipe.

Size: φ12mm-φ400mm

material: Q195-Q235

4.screw seam two submerged-arc welding pipe

size: φ159mm-φ2200mm

material: Q235B Q345B