Galvanized steel pipe, divided intohot dipped galvanizedand electricity galvanized pipe, zinc layer of hot dip galvanized is more thick,could achieve 200g/m2-400g/m2, coating uniformity, strong adhesion, long service life, etc.the cost of Electric galvanized is lower, the surface is not very smooth, its corrosion resistance is more bad than galvanized pipe.Our products are full of hot dip galvanized pipe and pre-galvanized pipe.
15-1220mm (1/2 inch-48 inch)
usually 4.5-11.8m, or according to the clients requirements
API5L: GRB, X42, X46, X56, X60, X70 ASTMA53: GRA, GRB, GRC EN: S275, S275JR, S355JRH, S355J2H GB: Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360-L355
BS1387, BS1139, EN39, EN10219, ASTM A53, API 5L, GB/T3091
epoxy coating, 3pe, vanish coating, bitumen coating, black coating or as per customer's requirements
Chemical Component Analysis, Mechanical Properties( Ultimate tensile strength, Yield strength, Elongation), Technical Properties( Flattening Test, Bending Test, Blow Test, Impact Test), Exterior inspection, Hydrostatic Test, X-ray Test, X-ray Test.
ERW, Hot Rolled, Cold Rolled
3. Water transportation
Low and middle pressure fluid pipeline, boiler, petroleum and natural gas industry,
drilling, chemical industry, electric industry, shipbuilding, fertilizer equipment and pipeline, structure,
petrochemical, pharmaceutical industry.
1. Lower price comparing to seamless steel pipe or stainless steel pipe
2. Excellent physical performance in applications
3. Shorter Delivery time
4. Large quantities in stock
Pipe production process
Billet inspection--- acid washing, cleaning--cutting--visual inspection--scraping--visual reinspection--centering--heating--piercing--pipe rolling--sizing--cooling--reheating--stretch reducing--cooling--straightening--ends cutting--visual inspection--electromagnetic, eddy current testing-- drifting--hydraulic testing--marking and packing