China astm a36 square metal tube Q235b / building Manufacturer, Supplier

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China astm a36 square metal tube Q235b / building Manufacturer, Supplier

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Product Description

Product description:

Product name	hollow section square tube
Wall Thickness	0.7mm–13mm
Length	1–14m According to customer requirements …
Outer Diameter	20mm20mm—400mm400
Tolerance	Tolerance based on Thickness: ±5～±8%; According to customer’s request
Shape	square
Material	Q195—Q345, 10#, 45#, S235JR, GR.B-D, STK500, BS1387……
Surface treatment	black
factory	yes
Standard	ASTM, DIN, JIS, BS
Certificate	ISO, BV, CE, SGS
Payment terms	30% T/T deposit in advance, 70% balance after B/L copy;
Delivery times	25 days after receive ur deposits
Package	Through a bundle According to customer’s requirement
Loading port	Tianjin/Xingang

Product photos:

Frequently Asked Questions (FAQ)

What are the size options for the hollow section square tube?

The hollow section square tube is available with an outer diameter range of 20mm*20mm to 400mm*400mm, a wall thickness between 0.7mm and 13mm, and customized lengths spanning from 1m to 14m.

What materials and steel grades can I choose from?

We supply hollow sections in various steel grades, including Q195—Q345, 10#, 45#, S235JR, GR.B-D, STK500, and BS1387, meeting diverse structural requirements.

What international standards and certificates do your products meet?

Our square tubes are manufactured according to standard specifications such as ASTM, DIN, JIS, and BS, and certified by reputable international bodies including ISO, BV, CE, and SGS.

What are the payment and shipping terms?

We accept payment via a 30% T/T deposit in advance, with the remaining 70% balance due after receiving the B/L copy. The delivery time is typically 25 days after the deposit is received, loading from Tianjin or Xingang port.

How are the square tubes packaged for delivery?

They are securely packaged in bundles or customized according to specific customer requirements to ensure protection during transit.