1. Seamless pipe:
Size: Dia10mm-630mm
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: Dia10mm-630mm
Material: Q195-Q235 16Mn Q345 A, B

3. Welding square pipe/rectangular tube, galvanized square and
Rectangular pipe.
Size: Dia12mm-400mm
Material: Q195-Q235

4. Screw seam two submerged-arc welding pipe
Size: Dia159mm-2200mm
Material: Q235B Q345B