Name: Galvanized Round Steel Tube
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Galvanized Round Steel Tube

The material of galvanized steel pipe is mainly carbon steel, and the surface is enhanced by hot-dip galvanizing process to enhance corrosion resistance.
Material composition
Carbon steel has a high carbon content, good mechanical properties and weldability, and is immersed in molten zinc liquid after pickling to form an alloy coating.
Process characteristics
Hot-dip galvanized pipes use molten zinc liquid to combine with steel pipe matrix, with uniform coating and strong adhesion, suitable for low-pressure fluid transportation and building water supply and drainage
Applicable scenarios
Low-pressure scenarios such as building water heating, gas transportation, power line ducts
High-pressure scenarios such as industrial water supply and gas supply systems, oil and gas high-pressure transportation

Products	Galvanized Steel Tube / Pipe
	Round Tube	Square Tube	Rectangular Tube
Wall Thickness	0.8-50mm	0.8mm--50mm	0.8-50mm
Outer Diameter	15-610mm	1515mm – 600600mm	1020mm-700300mm
Zinc Coat	40-240g/m²
Steel Grades	Q195, Q235A-B, Q345A-E, ASTM A36,ASTM A500, ASTM A53, ASTM 106, SS400, St37, St52, S235JR, S355TRH etc
Standards	GB/T 3091-2001,GB/T13912-2002, BS 1387, ASTM F1083 etc.
Pipe EndsTreatment	Plain, beveled, threaded, socket with holes, with PVC clap/ coupling/ clamp, or as customers' requirement
Application	Liquid delivery (pump well, gas, water), construction pipe, structural pipe(greenhouse structure, fence post), curtain wall, machinery part etc.
Package	In bundle, no other package or wrapped with waterproof, or as customers' requirement
Payment Term	T/T, L/C at sight,West Union
Price Term	CIF; CFR; FOB; EXW

chemical composition

Grade	Standard	C (%) max	Mn (%)	Si (%) max	P (%) max	S (%) max
ASTM A53 Grade B	ASTM A53 (Seamless/Welded Pipe)	0.3	0.29-1.06	0.4	0.05	0.045
ASTM A106 Grade B	ASTM A106 (Seamless tube)	0.3	0.29-1.06	0.35	0.035	0.035
API 5L Grade B	API Spec 5L (pipeline pipe)	0.26	0.45-1.20	0.4	0.03	0.03
S235J0H / S235J2H	EN 10219-1/-2 (Cold-formed welded pipe)	0.17-0.21	0.65-1.60	0.5	0.030-0.035	0.030-0.035
S355J0H / S355J2H	EN 10219-1/-2 (Cold-formed welded pipe)	0.20-0.24	0.70-1.70	0.50-0.55	0.030-0.035	0.030-0.035
STK 400 / STK 490	JIS G 3444 (Structural carbon steel pipes)	0.30-0.32	0.30-1.00	0.30-0.55	0.04	0.04
Q235B / Q355B	GB/T 3091 (Low-pressure fluid delivery pipe)	0.20-0.22	0.30-0.80	0.35	0.045	0.045

DN	outer diameter		Ordinary steel pipe
MM	MM	Deviation	Thickness		welded pipe(kg/m)	Galvanized pipe(kg/m)
MM	MM	Deviation	MM	Deviation	welded pipe(kg/m)	Galvanized pipe(kg/m)
6	10.2		2.0		0.4	0.4256
8	13.5		2.3	12%	0.62	0.64
10	17		2.3	-15%	0.82	0.84
15	21.3	±0.5mm	2.8		1.26	1.30
20	26.8		2.8		1.63	1.68
25	33.5		3.3		2.42	2.49
32	42.3		3.3		3.13	3.22
40	48		3.5		3.84	3.96
50	60	±1%	3.5		4.88	5.03
65	75.5		3.8		6.64	6.84
80	88.5		4.0		8.34	8.59
100	114		4.0		10.85	11.18
125	140		4.5		15.04	15.49
150	165		4.5		17.81	18.34

Packaging and shipping

Shandong Zhonglian Yongsheng Special Steel Co., Ltd. is a steel production enterprise that has been engaged in steel production, processing and sales for many years. Its main products include stainless steel series, carbon steel, galvanized steel and other profile products. It can also provide other metal products according to customer needs, with an annual export volume of about 1 million tons. It has five finishing production lines, three hot-dip galvanizing production lines, and two color coating production lines. It adopts advanced automatic width control system (AWC), automatic thickness control system (AGC), bending roll system, work roll guide roll system and other effective measures to ensure product quality. Its products are exported to more than 30 countries and regions including the United States, Canada, Spain, Russia, Iran, Saudi Arabia, Morocco, India, Pakistan, Malaysia, Singapore, Australia, New Zealand, etc. "Punctuality, integrity, and humanized service" have always been the development principles that the company and all employees have always adhered to.

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