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Q345D square hollow section steel tube

Q345D square hollow section steel tube
Q345D square hollow section steel tubeQ345D square hollow section steel tubeQ345D square hollow section steel tubeQ345D square hollow section steel tubeQ345D square hollow section steel tube
FOB Price

US $650.001 - 300 ton

US $600.00301 - 1,000 ton

group name
Carbon Steel Pipe
Min Order
1 ton
brand name
Topsino steel pipe
Nearest port for product export
Klang port, Chittagong port, Singapore port, Karachi port
Delivery clauses under the trade mode
FOB, CFR, CIF, EXW, DDP, DDU, Express Delivery
Acceptable payment methods
T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Westem Union, Cash, Escrow
Export mode
Have the independent export and import right
update time
Wed, 08 Feb 2017 11:23:44 GMT


  • Standard ASTM A500, EN10210, JIS G3466, GB/T3094-2000

  • Grade S235JRH/S275J0H/S275J2H/S355J0H/S355J2H/S355K2H

Packging & Delivery

  • Min Order1 ton


Place of Origin:Tianjin, China (Mainland)
Section Shapes:Square/Rectangular
Surface Treatment:Painted, Oiled, galvanized etc.


topsino steel pipe Product Description

Product Description

Mechnical property for Q345D low alloy structural steel:

Thickness (mm)
Q345D≤ 16> 16 ≤ 35> 35 ≤ 50>50
Yield strength (≥Mpa)345325295275
Tensile strength (Mpa)470-630

Chemical composition for Q345D low alloy structural steel (Heat Analysis Max%)

Main chemical elements composition of Q345D
CSiMnPSVNbTiAl (min.)


 Q345D square hollow section steel tube


Section shape: square,rectangular

Thickness: 1.0mm-20mm

Outer diameter: 20mm*20mm-400mm*400mm,15*20mm-400*600mm


ASTM A500, BS1387,GB3091,ASTMA53, B36.10, BS EN1029, GB/T9711 etc


Q195, Q235, Q345(B,C,D,E); ASTM A53 GrA,GrB; STKM11,ST37,ST52, 16Mn,etc.


Plain ends, cutting etc

Surface Treatment

1. Galvanized

2. PVC,black and color painting

3. Transparent oil,anti-rust oil

4. According to clients requirement


1. Bundle

2. Bulk

3. Plastic bags ,etc

Min order

1 ton, more quantity price will be lower

Payment terms

T/T, L/C at sight, western union etc.

Deliver time 

Within 7-30 days after deposit, ASAP


We can do special orders as customer’s requests.

We also can provide all kinds of steel hollow pipes.

All the production process are made under the ISO9001:2008 strictly

Key words: rectangular steel pipe/square steel pipe/Q345D square hollow section


Rectangular steel tubes are widely used in Construction,machine structure pipe, Agriculture equipment pipe, Water and gas pipe, Greenhouse pipe, Building material tube, Furniture tube, Low pressure fluid tube etc.

Competitive advantage

1.One-stop purchasing saving time and cost for customer

2.Customized production and packing for customer

3.Providing one-stop solution for customer with 30 years sales experience

4.Making sure the safety and delivery time of the cargo because of close cooperation between us and major shipping companies

5.Discount according to order quantity

Loading and shipping

just give us an inquiry,you will get more than you expected!