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Rectangular hollow GI pipe galvanized steel tube gi square tubing BS 60 Galvanized square steel pipe

〣Application range of galvanized round pipegalvanized round pipe Because the pipeline has good comprehensive performance, it is widely used in chemical, construction, water supply, drainage,petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire protection, electric power, ae

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Square pipe, square pipe and rectangular pipe is a kind of address, that is, the side length is equal and unequal steel pipe. It is made of strip steel through processing and rolling. Generally, strip steel is unpacked, leveled, crimped, welded to form a round tube, which is then rolled into a square tube and cut to the required length. Also known as square and rectangular cold-formed hollow steel, square pipe and rectangular pipe for short, code F and J respectively

1. The allowable deviation of the wall thickness of the square rectangular pipe shall not exceed plus or minus 10% of the nominal wall thickness when the wall thickness is less than 10mm, and plus or minus 8% of the wall thickness when the wall thickness is more than 10mm, except the wall thickness of the corner and weld area.

2. The usual delivery length of square tube is 4000mm-12000mm, mostly 6000mm and 12000mm. Square rectangular pipe is allowed to deliver not less than 2000mm short and non-fixed size products, can also be delivered in the form of interface pipe, but the customer should be in use when the interface pipe should be removed. The weight of short size and non-fixed size products shall not exceed 5% of the total delivery, for the theoretical weight of more than 20kg/m square pipe shall not exceed 10% of the total delivery

3. The bending degree of the square tube shall not be greater than 2mm per meter, and the total bending degree shall not be greater than 0.2% of the total length


The square pipe is classified according to its use: decorative square pipe, machine tool equipment square pipe, mechanical industry square pipe, chemical square pipe, steel structure square pipe, shipbuilding square pipe, automobile square pipe, steel beam column square pipe, special purpose square pipe.

Application: Widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railway, highway guardrail, container skeleton, furniture, decoration and steel structure fields.

Used in engineering construction, glass curtain wall, door and window decoration, steel structure, guardrail, machinery manufacturing, automobile manufacturing, household appliance manufacturing, shipbuilding, container manufacturing, electric power, agricultural construction, agricultural greenhouse, bicycle rack, motorcycle rack, shelves, fitness equipment, leisure and tourism supplies, steel furniture, various specifications of oil casing, oil tubing and pipeline pipe, water, gas, sewage, air, mining Warm and other fluid transmission, fire and support, construction, etc.

〣Implementation standard

GB/T6728-2002,GB/T6725-2002, GBT3094-2000, JG 178-2005, ASTM A500 JIS G3466, EN10210 or Technical Agreement.

GB/T3094-2000 (national standard) cold pressed shaped rectangular tube

GB/T6728-2002 (national standard) cold formed hollow section steel for structure

Welded rectangular tubes and seamless rectangular tubes with cold formed circular and irregular sections in carbon steel for construction

En 10219-1-2006(Euro standard) Cold formed welded hollow structure profiles of non-alloy and fine grains

Angular rectangular tubes for general construction



  Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer Pipe, Structure Pipe, Other

  Alloy Or Not


  Section Shape


  Special Pipe

  API Pipe, Other, EMT Pipe, Thick Wall Pipe


  0.8 - 30 mm


  Q195/Q215/Q235/Q345, GR.A/B, S235/S355


  ce, BIS, tisi, KS, JIS, GS



  Surface     Treatment

  Pre-galvanized/hot dipped galvanized/Bare/oil



  Processing Service

  Welding, Punching, Cutting, Bending, Decoiling


  by actual weight

  Delivery Time

  7-14 days




 Q195/Q215/Q235/Q345, GR.A/B, S235/S355

〣Application range of galvanized round pipe

galvanized round pipe Because the pipeline has good comprehensive performance, it is widely used in chemical, construction, water supply, drainage,petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire protection, electric power, aerospace, shipbuilding and other basic projects.


1.Reasonable price with excellent quality2.Abundant stock and prompt delivery3.Rich supply and export experience, sincere service4.Reliable forwarder, 2-hour away from port.


Loose package; Packaged in bundles(2Ton Max); bundled pipes with two slings at the both end for easy loading and discharging;wooden cases; waterproof woven bag.


Q1: Are you a manufacturer?

A: Yes, we are a manufacturer, we have our own factory.  And we are the China leading galvanized steel coil, galvalume steel coil,PPGI/PPGL etc.  We promise that we are exactly the supplier you have been looking for.  We welcome you to visit our factory to check our production lines and know more about our capacity, quality.

Q2: Do you have quality control system?

A: Yes, we have ISO, BV, SGS certifications and our own quality control laboratory.

Q3: How long is your delivery time?

A: Generally it is 7-14 days if we have the exact goods in our stock.  If not, it will take around 25-35 days to get goods ready for delivery.

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Zhishang Steel Co., Ltd

ABOUT USOverviewThe company mainly deals in color-coated, galvanized, stainless steel pipes, stainless steel coils, stainless steel plates of various materials; hot-rolled series of rebar, medium and heavy plates, coils, I-beams, angle steels, channel steels, H-beams and other steel products and deep processing Service. (The company’s annual invent···

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