Galvanized Steel Pipe

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seamless steel pipe, round steel, welded pipes, spiral pipes, galvanized pipe, alloy pipes, stainless steel, threaded steel, angle grooves, aluminum plates, U-shaped steel and other dozens of products, hundreds of steel grade materials.

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Introduction

Galvanized seamless pipe is divided into cold-plated steel seamless pipe and hot dip seamless pipe.

Hot dip seamless pipe

The seamless pipe is to make the molten metal and iron substrate reaction, the alloy layer, so that the substrate and coating combination of both. Hot-dip galvanizing is the first steel pickling, in order to remove the steel pipe surface of iron oxide, pickling, aqueous solution of ammonium chloride or zinc chloride or ammonium chloride and zinc chloride mixed aqueous solution tank cleaning, and then send into the hot dip tank. Hot dip galvanized coating uniformity, strong adhesion, and long life.

Cold-plated seamless pipe

Cold galvanized, electric-galvanized, galvanized the amount of small, only 10-50g/m2 of its own resistance to corrosion than hot dip galvanized pipe a lot of difference. Regular galvanized pipe manufacturers, in order to ensure the quality, most do not use electric-galvanized (cold-plated). Only those small-scale, outdated equipment and small businesses with electric galvanized, of course, their prices are relatively cheap. The Ministry of Construction has formally below, cold galvanized pipe to eliminate backward technology, the future not be allowed to cold galvanized pipe for water, gas pipes.

Galvanized seamless mechanical properties

The mechanical properties of steel is to ensure that an important indicator of the steel end-use properties (mechanical properties), it depends on the chemical composition and heat treatment of steel. Steel standards, according to different requirements, the provisions of the tensile properties (tensile strength, yield strength or yield point elongation) and hardness, toughness, user requirements, high and low temperature performance.

Types: Galvanized welded steel pipe, galvanized seamless steel pipe
Materials: Carbon steel
Connection type: threaded
Size range:1/8″-36″
Schedule: sch40, sch80, sch120, sch160, XH, XXH

Length of the galvanized tubes
- in diameter 4 – 16 mm 6000 + 100 mm
- in diameter 18 – 42 mm 6000 + 50 mm

Tolerances of the zinc coated tubes
- tolerances of the outside diameter:
- diameter between 4 – 30 mm ±0,08 mm
- diameter between 35 – 38 mm ±0,15 mm
- diameter up to 42 mm ±0,20 mm
- tolerances of the inside diameter are according to EN 10305-4
- tolerance of the wall thickness ± 10%

The Steel grades for the zinc coated tubes
E 235+N and E 355+N

Outside diameter [mm]	Wall thickness [mm]
	0,50	0,75	0,89	1,00	1,24	1,50	1,65	2,00	2,11	2,30	2,50	3,00	3,50	4,00	5,00
	Weight [kg/m]
4	0,043	0,060		0,074
5		0,079		0,099
6		0,097		0,123		0,166		0,197
6,35			0,120		0,156
8				0,173*		0,240*		0,296*			0,339
9,52			0,189		0,235		0,320
10				0,222*		0,314*		0,395*			0,462
12				0,271*		0,388*		0,493*
12,7			0,259		0,350		0,450		0,551
13				0,296		0,425		0,543
13,5										0,635
14				0,321*		0,462*		0,592*			0,709*	0,814
15				0,345*		0,499*		0,641*			0,771*	0,888
15,87			0,329		0,447		0,579		0,716
16				0,370*		0,536*		0,690*			0,832*	0,961
18						0,610*		0,789*			0,956	1,100
20				0,469		0,684*		0,888*			1,079	1,258*
22						0,758*		0,986*			1202*	1,406	1,597
25						0,869		1,134			1,387	1,628		2,071
28						0,980		1,282			1,572	1,850		2,367
30								1,381				1,997	2,287	2,565
32								1,455
35								1,628				2,367		3,058
38								1,866					2,589	3,354	4,069
42								1,973				2,885		3,748

Product Surface: