Product Description
Square tube is a hollow square cross section light thin wall steel tube, also known as refrigeration bending steel profiles. It is based on Q235 hot rolled or cold rolled steel strip or rolled plate parent metal by cold bending forming by high frequency welding again after made of square cross section shape, the size of the steel.
1). black steel tube
2). galvanized steel tube
3). galvanized section steel:angle steel,channel steel,I/H Beam,flat and round bar
4). rotary blade for farm and garden
5). street light pole
6). we also can galvanize anti-corrosion processing surface for you.
used seamless steel pipe for sale/ 30 inch seamless steel pipe/ seamless carbon steel pipe
| Size | 10mm*10mm-600mm*600mm |
| Wall thickness (W.T.) | 0.5mm-20mm |
| Length | 1m-12m ,by customer’s requirements |
| Standards | ASTM A500, GB/T6728-2002 |
| Materials | Q195,Q235,Q345 |
| Main market | Middle East, Africa, Asia and some European country and America ,Australia |
| Country of origin | Tianjin,China |
| Payment terms | T/T, L/C, D/P |
| Terms of trade | FOB ,CIF,CFR |
| Minimum order | 10 tons |
| Section Shape | Square |
| Certification | ISO,BV,SGS |
| Advantage | 1, reasonable price with excellent quality 2, abundant stock and prompt delivery 3, rich supply and export experience, sincere service |
The company introduces foreign advanced countries building experience, promoting construction the contractor for the business philosophy, integrating design, man processing to installation, let the construction unit can get good service from beginning to end and high-quality low-cost construction finished products; Company relying on the advantage of colleges and universities, hired authoritative expert panel members, China steel structure steel structure makes the precision of the products, to better serve the customer's requirements. Tianjin Erf metal co., LTD. Of integrity, strength and product quality obtain industry acceptance. Welcome friends from all walks of life come to visit, guidance and business negotiation.
ISO System
· SGS and BV Audited company .
· Industry experience over 8 years.
· Management Systems-Internal Software
· Finished Product Inventory-More Than 500 Tons.
· Raw Material inventory -Over 800 Mertic Tons.
· Shipment of goods -More than 20 countries worldwide.
· We have the most convenient transport and prompt delivery.
· We offer competitive price with best service .
· We have high technical production line with top quality products.
· We have win high reputation based on best quality products.
Main features: under pressure, support time, easy to install is not easy to deformation, etc.
Main application: mainly used for mine, mine roadway secondary supporting of roadway, and mountain tunnel support purposes.
Tianjin Erf metal structure co., LTD. is a positive response to the national development and environmental protection, energy-saving and efficient steel structure industry, and was engaged in steel structure of the system design, research and development, production and installation of professional firms.
Global recruitment of agents, distributors, wholesalers ; Undertake ODM & OEM orders.
Sincerely expect your joining and cooperation for the mutual win-win business !
24 Hours hot Line:+86-18502645622

We specialized in producing hot &cold bending steel, cold bend profiled steel,such as C/Z/U/H/T/I type profile steel; solar galvanized stents,outer edge c type,llight steel keel,Galvanized steel, steel door frame; Hot dip galvanized steel structure; metal wire rope , rolled plate kaiping; color coated Steel plate, strip steel,steel coil,angle steel,deformed bar,flat bar,chequer bar,steel pipe,rectangular and square tube,seamless tube and other special profile steels.
.Along with the people of the city construction and construction quality requirement is increasing day by day, the steel structure as a highly industrialized that are widely used in airports, stadiums, station, exhibition halls, clubs and other public buildings, the novel structure form, the model is bold and rich tension, added a lot of bright spots for the city.Steel structure system is due to its light weight, easy installation, short construction period, good seismic performance, investment recovery faster, less environmental pollution and other comprehensive advantages, and widely used in factories, warehouses, office buildings, high-rise residential and other industrial and civil buildings.

1) About Samples
We can't provide samples , you could notice us the detailed sizes or drawing,and then we'll quote and product it.
2) About Packing
seaworthy carton or according to customer's requirements
3) Terms of payment:
we accept L/C,D/A,D/P,T/T,Western Union,MoneyGram
4)Terms of Shipment:
average7-14days after receiving deposit.,MOQ:10ton/model
5)Ports of shipment:
Tianjin Xingang Port, by sea
)Inspection:
100% inspect before delivery.
12m steel beam loading into 40 foot container by diagonal. We have rich experienced to do it. Usually 40GP can load 26 tons.
Standard export seaworthy package, it uses steel strip with bundle according to product's size.
Any way,according to customer's requirements

More than10years' manufacture experience, the most professional supplier
China Erf Metal Structure Co., Ltd. is the leader of profile steel industry, which is specialized in producing cold-formed "C,Z,U,H" profile steel,we owns the world's advanced technology ,Tianjin Erf Metal Structure Co., Ltd is the subsidiary company of China Erf Metal Structur Group, we have many years manufacturing and technical experience,there are many excellent engineers and an excellent business team in our group,it is the most professional manufacturer in various profile steel . Erf Metal Structure
has got the ISO 9000 quality certificate, CE certificate, various quality certificates and many certificates of honor issued by Chinese government.

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