Chinese wholesale Hollow 1/2” Square Steel Tubes - ASTM Standard Gi Iron Galvanized Steel Pipe 2inch 2.5inch 4inch – Win Road

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Chinese wholesale Hollow 1/2” Square Steel Tubes - ASTM Standard Gi Iron Galvanized Steel Pipe 2inch 2.5inch 4inch – Win Road Detail:

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Gi Pipes Manufacturer in China are mainly locaed in Tianjin. Gi round pipe are divided into hot-dip galvanized steel pipes and pre-galvanized steel pipes with galvanized layer on the surface. Galvanizing can increase the corrosion resistance of the steel pipe and prolong the service life of the steel pipe.
Differences between ”Pre-galvanized pipe” and “Hot-dipped galvanized pipe”.
1.Pre-galvanized steel pipe base material is galvanized steel strap, the technical method is ERW longitudinal welded.
2.Hot-dipped galvanized pipe base material is black steel pipe (no surface treatment), then hot-dipped into the zinc pool to get the pipe.

OD	Pre galvanized:1/2”-4”(21.3-114.3mm) Hot dipped galvanized:1/2”-16”(21.3mm-406.4mm)
Thickness	Pre galvanized:0.6-2.5mm Hot dipped galvanized: 1.0- 20mm
Length Range	5.8m, 6m , 19ft, 20ft, 21ft, 24ft, or customized .
End finish	Plain/ beveled ends or threaded with sockets/coupling and plastic cap, grooved
Zinc coating	Pre galvanized:40- 120g/m² Hot dipped galvanized:200-600g/m²
Standard	BS 1387,BS1139,EN39,EN10219,ASTM A53,ASTM A795,GB/T3091etc.

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Nominal Pipe Size

Out Diameter			Wall Thickness
A	B	ASME	SCH10	SCH20	SCH30	STD	SCH40	SCH60	XS	SCH80
15	1/2″	21.3	2.11	–	2.41	2.77	2.77	–	3.73	3.73
20	3/4″	26.7	2.11	–	2.41	2.87	2.87	–	3.91	3.91
25	1″	33.4	2.77	–	2.9	3.38	3.38	–	4.55	4.55
32	1.1/4″	42.2	2.77	–	2.97	3.56	3.56	–	4.85	4.85
40	1.1/2″	48.3	2.77	–	3.18	3.68	3.68	–	5.08	5.08
50	2″	60.3	2.77	–	3.18	3.91	3.91	–	5.54	5.54
65	2.1/2″	73	3.05	–	4.78	5.16	5.16	–	7.01	7.01
80	3″	88.9	3.05	–	4.78	5.49	5.49	–	7.62	7.62
90	3.1/2″	101.6	3.05	–	4.78	5.74	5.74	–	8.08	8.08
100	4″	114.3	3.05	–	4.78	6.02	6.02	–	8.56	8.56
125	5″	141.3	3.4	–	–	6.55	6.55	–	9.53	9.53
150	6″	168.3	3.4	–	–	7.11	7.11	–	10.97	10.97
200	8″	219.1	3.76	6.35	7.04	8.18	8.18	10.31	12.7	12.7
250	10″	273	4.19	6.35	7.8	9.27	9.27	12.7	12.7	15.09
300	12″	323.8	4.57	6.35	8.38	9.53	10.31	14.27	12.7	17.48

Pipe End Treatment

Plain end, Beveled end, Threaded end with sockets or coupling and plastic cap, Grooved end, Swedged end, Expanded end.

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Application

Galvanized pipes are widely used . In addition to line pipes for water transport, fire fighting, gas, conduit, and other general low-pressure fluids, they are also used as support pipes in the petroleum industry, trestle piles, and mine tunnels.
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Packing

1.General package: in bundle only, no other package, no plastic cover, no nylon straps.
2.Sea-worth package: in bundle, tied with steel straps, anti-water plastic cover, nylon straps each end of bundle.
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Shipping

1.Loading by container.
2.Loading by bulk shipment.
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FAQ
Q: How can I get an exact price for my inquiry?
A: Dear sir/Madam, we will need below of your requirement to check the price:
1. Diameter
2. Wall thickness
3. Length
Q: What kind of package will I get?
A: You will get general package-packed in bundles with steel straps (no other cover on) if customer doesn’t have any requirement.
Q: What kind of package do you have?
1. General package. –Packed in bundles with steel straps, no other cover, no plastic package.
2. Seaworthy package.–Packed in bundle, and cover with plastic package.
Q: Do you have stock?
A: Yes, we have stok pipes for general specification.
Q: Do you provide free sample?
A: Yes, sample is free of charge.
While please kindly noted the international courier cost is not free of charge.
We could return the courier cost to customers once we cooperated.
Sample is sent by air courier when weight less than 1kg.

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