1. Seamless pipe
Size: Dia 10mm-630mm
Material: 10#-45#, Q345A/ 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 ), ST45.8, ASTM 106B etc. Foreign standard.

2. Straight weld tubing, galvanized pipe
Size: Dia 10mm-630mm
Material: Q195-Q235, 16Mn, Q345A/ B
3. Welding square pipe/ rectangular tube/ galvanized square and rectangular pipe
Size: Dia 12mm-400mm
Material: Q195-Q235
4. Screw seam two submerged-arc welding pipe
Size: Dia 159mm-2200mm
Material: Q235B, Q345B.