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Seamless square tube

The company is located in the steel capital-Shandong. It is the special distributor of Taiyuan Iron and Steel, Baosteel, Baoxin, Zhangpu, Anshan Iron and Steel in Shandong area.

Detailed introduction

Product Description

Product Name

Galvanized square and rectangular steel pipe


Square pipe: 20*20mm~500*500mm
Rectangular pipe: 20*40mm~300*500mm
Thickness: 1.2mm~20mm
Length: 3m~12m,random


Low carbon steel

Steel 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


EN10219, EN10210
GB/T 6728
JIS G3466
ASTM A500, A36

Surface Anti-rusty Coating

pre-galvanized (Zinc coating: 40-80g/m2)
hot dipped galvanized (Zinc coating: 200-600g/m2 )

Pipe Ends

Plain ends


ISO 9001 

Packing and Shipment

1. OD 300mm and below In hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles
2. above OD 300mm in bulk or according to custom opinion
3. 25 tons/container and 5 tons/size for a trial order;
4. For 20" container the max length is 5.8m;
5. For 40" container the max length is 11.8m.


Construction / building materials steel pipe
Structure steel pipe
Solar structure component steel pipe
Fence post steel pipe
Greenhouse frame steel pipe

Trade terms


Payment terms


Delivery time

15-45 days (based on quantity) after receiving advanced payment by T/T or L/C .

      Seamless square tube is a kind of long strip steel with hollow section and no seam around it. It is a square tube formed by extrusion of seamless tube through four sides of die. Square tube has hollow section and is widely used as a pipe for conveying fluid. It is mainly used in liquid transportation, hydraulic support, mechanical structure, medium and low pressure, high pressure boiler pipe, heat exchange pipe, gas, oil and other industries. It is stronger than welding and will not crack.


    The application of square tube includes construction, machinery manufacturing, steel construction, shipbuilding, solar power support, steel structure engineering, power engineering, power plant, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, Boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery and other high load welded structural parts, etc.

What we can do?
    We can cut the seamless steel pipe into the length you demand, and can make the surface to be bright by milling and grinding at the Lathe, and can grind the outer diameter and wall thickness to be the dimension you demand. If the sizes are not available from the standard common stock sizes, and the quantity are not enough for the new production, then we need process the stock larger seamless pipes into the sizes you need. And we also can make steel pipes deep processing. For example, size OD250x ID200 is not stock common size, then need using larger pipe to process into 250x 200, same as OD170xID100.

& Cutting steel pipe into demand length.
& Bending steel pipe according to the demands.
& Grind steel pipe into small sizes.
& Painting color in the steel pipe surface.
& Welding pipe and plate according to the drawings.


1. Q: What's your MOQ(minimum order quantity)?

A: One full 20ft container,mixed acceptable .

2. Q: What's your packing methods?

A: Packed in bundle or bulk (customed is accepted).

3. Q: What's your payment terms?

T/T 30% in advance by T/T ,70% will be before shipment under FOB.

T/T 30% in advance by T/T ,70% against the copy of BL under CIF.

T/T 30% in advance by T/T ,70% LC at sight under CIF.

4. Q: What's your delivery time?

A: 10-20 days after received the advance payment .

5. Q: Are you manufacturer or trader?

A: We are the manufacturer of construction materials for decade years , Fujin Group do domestic market and export business.

6. Q: Where's your factory?

A: Our factory is in shandong city afforded enough production ability and earlier  delivery time.

7. Q: Can we visit your factory?

A: Warmly welcome. Once we have your schedule, we will arrange the  professional sales team to follow up your case.

8. Q: Can you supply other scaffolding materials?

A: Yes. All related construction materials.

(1) scaffolding system (cup-lock system, ring lock system, scaffolding steel  frame, pipe&coupler system)

(2) Scaffolding Pipes (1.5'-2.0')x(0.3-12m), hot dipped  galvanized/Pre-galvanized /black. BS1139

(3) steel pipes (ERW steel pipes, Square/ Rectangular tube ,black annealed  steel tube)

(4) steel coupler (pressed/drop forged coupler)

(5) Steel Plank With Hooks Or Without Hooks

(6) steel stair case

(7) Screw Adjustable Base Jack

(8) Construction Metal Formwork

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