Product name: square & rectangle tube
Materials: ASTM A36, A500, GR.B, S195T, SS400, ST37, ST52.3 etc.
Standard: ASTM A36, A500, EN10025, EN10255
Shape: square, rectangle.
Surface: bare, galvanized, oiled, pickling.
Application: construction, machinery manufacturing, steel engineering, electrical engineering, agricultural and chemical machinery, highway railings, petroleum, bridges.
1. Standard: ASTM A36, A500, EN10025, EN10255
2. Materials: ASTM A36, A500, GR.B, S195T, SS400, ST37, ST52.3 etc.
3. Specification: 15*15mm-800*800mm.
4. Shape: square, rectangle.
5. The surface treatment: hot galvanized, electro-galvanized, coated with oil, pickling.
6. Application: Widely used in machinery manufacturing, construction, metallurgical industry, agricultural vehicles, agricultural
greenhouses, automotive, railway, highway guardrail, container framework, furniture, decoration as well as steel and other
1. The low pressure fluid galvanized welded pipe, standard number is GB / T3091-2008. Representative of material Q235A, Q235B, Q345B like. Mainly used for conveying water, gas, air, oil and heating hot water or steam, use is limited to general lowpressure fluid.
2. Low pressure fluid galvanized welded pipe, standard number is GB / T3092-2008. Representative material above. Mainly used for conveying water, gas, air, oil and heating hot water or steam and other general low pressure fluid, the pipe surface using hot-dip galvanizing or cold galvanizing anti-corrosion technology.
3. Mine liquid weld pipe, standard number I GB / T14291-2000. Representative of material Q235A, grade B steel is mainly used for mine air pressure, drainage, gas discharge shaft with a straight seam welded square tube.
4. The low pressure fluid with a large diameter welded pipe, standard number GB / T14980-1994. Representative material Q235AB level. Mainly used for conveying water, sewage, gas, air, steam heating and other low pressure fluids.
5. The mechanical structure with stainless steel welded pipe, standard number GB / T12770-1991. Representative material 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb like. Mainly used in machinery, automobiles, bicycles, furniture, hotel and restaurant decoration and other mechanical components and structures.
6. Fluid transport stainless steel welded pipe, standard number GB / T12771-1991. Representative material for 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, 0017Cr17Ni14Mo2 like. Mainly used for conveying low pressure corrosive media.
7. The low pressure delivery spiral square tube (Ministry of Oil Standards) standard number is SY / T5037-2008. Representative material for Q235B, Q345B and other steel materials. Mainly for low conveying water, oil, gas, heating and other pipelines.
8. Transport flammable and non-flammable fluid pipe, standard number GB / T9711.1 – 1997. Representative material for L245-L415, etc. (GB / T9711.2) pipeline steel. Mainly used to transport flammable and non-flammable fluid with low or high pressure pipe, require relatively high.
Square & Rectangle steel pipe production process
We have two kinds of packaging:
1. Package suitable for every kind of transport;
2. According to customer’s requirement.