Material	Carbon Steel
Surface Treatment	Galvanized
Usage	Pipeline Transport, Boiler Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Construction & Decoration
Section Shape	Square
Transport Package	Steel Strip Reinforcement
Specification	12 inch - 8 inch
Origin	Tianjin
HS Code	7306309000
Production Capacity	300, 000tons/Month

 

 

COMMODITY NAME

GALVANIZED SQUARE/Rectangular SECTION WELDED STEEL PIPE/ TUBE ( GI TUBE/ GI PIPE)

SIZE RANGE

SIDE LENGTH: 10mm*10MM-1200mm*1200MM ; THICKNESS: 0.6MM--60MM

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 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.

 
 

 

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.

 

 

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.