1. O.D.: 20*20-250*250mm 2. W.T.: 1.2 -14mm 3. Zn Coating: 200-400g/m2 Outside diameter 20*20-250*250mm Wall Thickness 1.2 -14mm SCH30,SCH40,STD,XS,SCH80,SCH160,XXS etc. Zn coating mass 200g-400g/m2 Material Q195 → Grade B, SS330,SPHC, S185 Q215 → Grade C,CS Type B,SS330, SPHC Q235 → Grade D,SS400,S235JR,S235JO,S235J2 Q345 → SS500,ST52 Quality grade First grade Section Shape Square Surface Treatment Galvanized Tolerance ±5% Technique Hot rolling then Hot Dipped Galvanized Length Less than 12m MOQ 10 Metric Ton Deliver Time Stock Package Nude pipe in bundle or as your request Payment terms T/T,L/C Standard GB/T3091-2008; BS1837-1985; ASTM A53/A53M-07; ASTM A513-07; ASTM A252; JIS G3444-06; JIS G3452-2010; EN10255; DIN2440 Main Usage Relevant Size 1. Water Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 60-273mm 2. Threaded/Screwed Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 21.3-165.1mm 3. Structural Steel Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 21.7-190.7mm 4. Scaffolding Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 48.3-48.6mm Wall thickness: 2.0-5.0mm Surface Finishing: Hot Dipped Gal./Pre-Gal. 5. Straight Seam Welded Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 48-273mm 6. Steel pipes with a longitudinal ERW Material: Q195/Q215/Q235/Q345B Outside Diameter: 21.3-273.1mm Standard: GB/T 3091-2008 Feature and Advantage: Thread, Oil Coating, Groovy, Standard Export Packing, Hydraulic Pressure, Automatic painting, stamping etc. service for steel pipe export. Quality Guarantee: Certificate: ISO9001:2008 by international quality system. Steel material and various physics and chemistry property, zinc ingot element testing service.