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ASTM A106 A36 hollow steel galvanizsed tube GI hot dip galvanized steel pipe

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Galvanized steel pipe/tube is an alloy of iron and carbon. It is rolled into a tube – usually round, square or rectangular – and then coated with zinc. Steel pipes are usually galvanized in one of two ways. It can be hot-dip galvanized, a thick protective coating can be formed by molten zinc, or a thinner layer of zinc can be attached to the steel by electroplating through the current zinc solution.Galvanizing can increase the corrosion resistance of the steel pipe and prolong the service life.
Welded steel pipe with hot-dip or electro galvanized coating on the surface of galvanized steel pipe. Galvanizing can increase the corrosion resistance of steel pipes and prolong their service life. Galvanized pipes are widely used. In addition to being used as pipeline pipes for water transmission, gas, oil and other general low-pressure fluids, they are also used as oil well pipes and oil transmission pipes in the petroleum industry, especially in offshore oil fields, pipes for oil heaters, condensing coolers and coal distillation oil washing exchangers of chemical coking equipment, trestle pipe piles and support frames of mine tunnels.

Product Name galvanized pipe/tube
Size galvanized round pipe:
Wall thickness: 0.5mm-30mm, or as required.
Outer diameter: 4mm-270mm, or as required.
Length: 6m-12m, or as required.

Galvanized square/rectangular pipe/tube:
Wall thickness: 0.5mm-30mm, or as required.
Outer diameter: 10mm*20mm-300mm*500mm, or as required.
Length: 6m-12m, or as required.

Zinc coating Zinc coated: usually 200g/m2 (30um) or as required 200 to 500g/m2 (30 to 70um)
Steel Grade Q195, Q235, Q345, S235JR, S275JR, STK400, STK500, S355JR, GR.B-D, 45#,S20C,SAE1010,SAE1020,SAE1045,EN8,EN19,C45,CK45,SS400,etc.
Standard BS1139-1775, EN1039, EN10219, JIS G3444:2004, GB/T3091-2001, BS1387-1985, DIN EN10025, ASTM A53 SCH40/80/STD, BS-EN10255-2004
Surface Finish Pre-galvanized, Hot dipped galvanized, Electro galvanized, Black, Painted, Threaded, Engraved, Socket.
International Standard ISO 9000-2001, CE CERTIFICATE, BV CERTIFICATE
Application: Construction / building materials steel pipe, Steel structure, Fence post steel pipe
Tolerance ±1%
MOQ 1 ton
Supply Ability 5000 tons / month
Lead Time 7-15 working days after the receipt of 30% deposit
Payment Terms 30%T/T Advance + 70% Balance
Price Terms FOB, CFR, CIF, EXW
Packing Standard sea-worthy package or as required

Square and Rectangular Steel Pipe size chart
Square Hollow Section Rectangular Hollow Section Thickness
20*20  25*25  30*30 20*40  30*40 1.2-3.0
40*40  50*50 30*50  25*50  30*60  40*60 1.2-4.75
60*60   50*70  40*80 1.2-5.75
70*70  80*80  75*75  90*90  100*100 60*80  50*80  100*40  120*80 1.5-5.75
120*120  140*140  150*150 160*80  100*150  140*80  100*180  200*100 2.5-10.0
160*160  180*180  200*200 200*150  250*150 3.5-12.0
250*250  300*300  400*200  350*350  350*300 250*200  300*200  350*200  350*250  450*250  400*300  500*200 4.5-15.75
400*400  280*280  450*300  450*200 400*350  400*250  500*250  500*300  400*600 5.0-20.0

Galvanized steel pipes have a wide range of uses. In addition to being used as pipelines for low-pressure fluids such as water, gas, and oil, it is also used in the petroleum industry, especially oil well pipelines, oil pipes and petroleum heaters in offshore oil fields, and used in chemical coking equipment. Condensation cooler, coal distillation wash oil exchanger pipeline, as well as mine pipe piles, mine tunnel support frame pipelines,Urban/civilian construction pipes, mechanical structure pipes, agricultural equipment pipes, water and gas pipes, greenhouse pipes, scaffolding pipes, building materials pipes, furniture pipes, low pressure fluid pipes, oil pipes, etc. Also, galvanized steel pipes are widely used in construction, machinery, coal mining, chemical industry, electric power, railway vehicles, automobile industry, roads, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, exploration machinery, greenhouse construction and other manufacturing industries.