2inch 4inch ASTM 53 Grade Galvanized Steel Pipes

• Customization: Available
• Type: Welded
• Technique: Hot Rolled
• Surface Treatment: Galvanized
• Usage: Pipeline Transport, Boiler Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Construction & Decoration
• Section Shape: Round
• Transport Package: Steel Strip Reinforcement
• Specification: 1\2 inch - 8 inch
• Origin: Tianjin
• HS Code: 7306309000
• Production Capacity: 300, 000tons/Month

Product Description

 

Product Description

 

COMMODITY NAME	GALVANIZED ROUND SECTION WELDED STEEL PIPE/ TUBE ( GI TUBE/ GI PIPE)
SIZE RANGE	DIAMETER: 21.3MM-610MM ; THICKNESS: 1.0MM--15.0MM
MATERIAL GRADE	Q195 = S195 / A53 Grade A Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2 Q355 = S355JR / A500 Grade B Grade C
STANDARD	ASTM A53 ( sch10; SCH40), ASTM A500, BS1387, EN39, BS1139, ISO65 GB/T3091, GB/T13793
ZINC COATING	40~200G/M2 ( OR CUSTOMIZED)
PIPE ENDS	PLAIN ENDS / BEVEL ENDS WITH PLASTIC CAPS/ THREADED BOTH ENDS WITH COUPLING AND CAPS/ GROOVED ENDS
DELIVERY TIME	7-10 days after receiving advanced payment

PRE-GALVANIZED STEEL ROUND PIPE

* Process: Pre-galvanized steel pipes are galvanized before they are formed into the final product. The galvanization process
typically involves coating the steel with a layer of zinc through either a hot-dip process or an electroplating process.
* Appearance: Pre-galvanized pipes have a smoother and more even zinc coating. The surface is usually shinier and has a uniform
appearance.
* Application: Pre-galvanized pipes are often used in applications where the final appearance is important, such as in outdoor
structures, fencing, and decorative applications.

HOT DIP GALVANIZED STEEL ROUND PIPE

* Process: Hot-dip galvanized steel pipes are formed first and then immersed in a molten bath of zinc. The immersion process results in a thicker and more durable zinc coating compared to pre-galvanized pipes.
* Appearance: Hot-dip galvanized pipes may have a rougher surface compared to pre-galvanized pipes due to the thicker zinc coating. The coating is usually more uneven, but it provides greater protection against corrosion.
* Application: Hot-dip galvanized pipes are commonly used in applications where corrosion resistance is a critical factor, such as in water pipelines, construction, and outdoor structures exposed to harsh environments.

 

Pre-Galvanized ---Square and Rectangular Steel Pipe size chart
Square Hollow Section	Rectangular Hollow Section	Wall Thickness
15*15	10*20	0.7mm~1.5mm
20*20	/	0.7mm~2mm
25*25	20*30 15*30	0.7mm~2.3mm
30*30 40*40 50*50 60*60 80*80 50*100 100*100	20*40 30*40 35*55 30*50 30*60 37*57 37*77 40*60 40*80 50*70 60*80 60*120	0.7mm~2.5mm
If you have other specification request, please message us.

 

Hot Dip Galvanized ---Square and Rectangular Steel Pipe size chart
Square Hollow Section		Wall Thickness	Rectangular Hollow Section	Wall Thickness
20*20		1.5mm~2mm	20*40	1.5mm~3mm
25*25		1.5mm~2mm	30*40	1.5mm~3mm
30*30		1.5mm~2.75mm	30*50	1.5mm~3.75mm
40*40		1.5mm~3.75mm	40*60	1.5mm~3.75mm
50*50		1.5mm~3mm	40*80	1.5mm~4.75mm
60*60		2.5mm~3.75mm	50*70	1.5mm~3.75mm
80*80		1.7mm~4.75mm	50*100	1.5mm~5.75mm
100*100		1.7mm~4.75mm
120*120		2.5mm~5.75mm
150*150		2.5mm~7.75mm
200*200		2.5mm~9.75mm
If you have other specification request,please message us.

 

Product Parameters

 

N	OD		ASTM A53 / API 5L			BS1387 / EN10255
			SCH10S	STD SCH40	SCH80	Light	Medium	Heavy
	MM	INCH	MM	MM	MM	MM	MM	MM
15	21.3	1/2"	2.11	2.77	3.73	2	2.6	-
20	26.7	3/4"	2.11	2.87	3.91	2.3	2.6	3.2
25	33.4	1"	2.77	3.38	4.55	2.6	3.2	4
32	42.2	1-1/4"	2.77	3.56	4.85	2.6	3.2	4
40	48.3	1-1/2"	2.77	3.68	5.08	2.9	3.2	4
50	60.3	2"	2.77	3.91	5.54	2.9	3.6	4.5
65	73	2-1/2"	3.05	5.16	7.01	3.2	3.6	4.5
80	88.9	3"	3.05	5.49	7.62	3.2	4	5.0
90	101.6	3-1/2"	3.05	5.74	8.08
100	114.3	4"	3.05	6.02	8.56	3.6	4.5	5.4
125	141.3	5"	3.4	6.55	9.53		5.0	5.4
150	168.3	6"	3.4	7.11	10.97		5.0	5.4
200	219.1	8"	3.76	8.18	12.7

 

Detailed Photos

 

 

Different Surfaces

Normal spangle

Through addition of certain heavy metal element into molten zinc bath, regular spangle pattern is produced on Hot-dip zinc-coated steel sheet.

Minimized spangle

The zinc layer(coating) does Not contain Lead(Pb), which complies with EU WEEE and RoHS directives. This is a non-toxic and environmental friendly material.

Spangle-free

During hot-dip galvanizing, only a certain amount of aluminum is added to the zinc solution, and lead-free, antimony, and tin are not added to produce spangle-free products.

Main Features of Galvanized Steel

Anticorrosive: 13 years in heavy industrial areas, 50 years in the ocean, 104 years in the suburbs and 30 years in cities.
Cheap: The cost of hot-dip galvanizing is lower than that of other coatings.
Reliable: The zinc coating is metallurgically bonded to the steel and forms part of the steel surface,so the coating is more
durable.
Strong toughness: The galvanized steel sheet layer forms a special metallurgical structure that can withstand mechanical damage during transportation and use.
Comprehensive protection: Every part of the plated piece can be galvanized, and is fully protected even in depressions,sharp corners,and hidden places.
Save time and energy: Galvanizing process is faster than other coating methods.

 

Our Advantages

 

1.100% after-sales quality and quantity assurance.
2. Professional sales manager quickly reply within 24 hours.
3. Large Stock for regular sizes.
4. Free sample 20cm high quality.
5. Strong produce capability and capital flow.

Strict Quality Control:
1) During and after production, 4 QC staffs with more than 5 years experience inspect products in random.

2) National accredited laboratory with CNAS certificates
3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.
4) Approved by Malaysia, Indonesia, Singapore, Philippines, Australia, Peru and UK.

 

Company Profile

 

 

Packaging & Shipping

 

FAQ

 

Q:Can you send samples?
A:Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs.

Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q:About product prices?
A:Prices vary from period to period due to cyclical changes in the price of raw materials.

Q:What are the certifications for your products?
A:We have ISO 9001, SGS, EWC and other certifications.

Q:How long does your delivery time take?
A:In general, our delivery time is within 7-10 days, and may be delayed if the demand is extremely large or special circumstances occur.

Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.

Q:Does the product have quality inspection before loading?
A:All our products are strictly tested for quality before packaging, and unqualified products will be destroyed.