JINBAICHENG Metal Materials Co., Ltd

Best quality Alloy Pipe - Pre-Galvanized Square/Rectangular Tube – JINBAICHENG

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Our enterprise since its inception, often regards solution excellent as enterprise life, continually strengthen output technology, enhance product high quality and continually strengthen organization total high-quality administration, in strict accordance using the national standard ISO 9001:2000 for Galvanized Steel Sheet Roll , Mild Steel Tube , Hot Rolled Steel Bar , We are seeking for extensive cooperation with honest customers, achieving a new cause of glory with customers and strategic partners.
Best quality Alloy Pipe - Pre-Galvanized Square/Rectangular Tube – JINBAICHENG Detail:

Structural components

1. 16mn Continental Square Tube

Chemical composition: carbon C: 0.17 ~ 0.24 “silicon Si: 0.17 ~ 0.37 manganese Mn: 0.35 ~ 0.65 sulfur S: ≤ 0.035 phosphorus P: ≤ 0.035 chromium Cr: ≤ 0.25 nickel Ni: ≤ 0.

2. 16mn square tube

Chemical composition: carbon C: 0.17 ~ 0.24 “silicon Si: 0.17 ~ 0.37 manganese Mn: 0.35 ~ 0.65 sulfur S: ≤ 0.035 phosphorus P: ≤ 0.035 chromium Cr: ≤ 0.25 nickel Ni: ≤ 0.25 copper Cu: ≤ 0.25

Product Display

Square Tube4
Square Tube3
Square Tube2

Physical properties

1.1 Plasticity

Plasticity is the ability of a metallic material to produce plastic deformation (permanent deformation) under load without damage.

1.2 Hardness

Hardness is a pointer to the degree of hardness or softness of a metallic material. The most commonly used method for determining hardness in production is the indentation hardness method, which uses an indenter of a certain geometry to press into the surface of the tested metal material under a certain load and determines its hardness value according to the degree of being pressed into it.

Commonly used methods are Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) and Vickers hardness (HV) methods.

1.3 Fatigue

The strength, plasticity and hardness discussed earlier are all pointers to the mechanical properties of the metal under static load. In fact, many machine parts work under cyclic loads, and under such conditions the parts produce fatigue.

1.4 Impact toughness

The load acting on the machine part at a large speed is called impact load, and the ability of the metal to resist damage under impact load is called impact toughness.

1.5 Strength

Strength is the resistance of a metal material to damage (excessive plastic deformation or fracture) under a static load. As the load action in the form of tensile, compression, bending, shear, so the strength is also divided into tensile strength, compressive strength, bending strength, shear strength, etc.. There is often a certain connection between the various strengths, the use of the general tensile strength as the most basic strength pointer.

Typical use

Square tube is used in construction, machinery manufacturing, steel construction projects, shipbuilding, solar power generation support, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, boiler construction, highway railings, housing construction, pressure vessels, petroleum storage tanks, bridges, power station equipment, lifting and transportation machinery and other high load welded structural parts, etc.

Main Products and Technical parameters

Process classification

Square tube is classified according to production process: hot rolled seamless square tube, cold drawn seamless square tube, extruded seamless square tube, welded square tube.

Among them, welded square tube is divided into

1. according to the process – arc welding square tube, resistance welding square tube (high frequency, low frequency), gas welding square tube, furnace welding square tube

2. according to the welding seam – straight seam welded square pipe, spiral welded square pipe.

Material classification

Square pipe by material: plain carbon steel square pipe, low alloy square pipe.

1. Plain carbon steel is divided into: Q195, Q215, Q235, SS400, 20# steel, 45# steel, etc.

2. Low alloy steel is divided into: Q345, 16Mn, Q390, ST52-3, etc.

Production standard classification

Square tube according to production standards: national standard square tube, Japanese standard square tube, imperial square tube, American standard square tube, European standard square tube, non-standard square tube.

Section shape classification

Square tube according to the shape of the section classification.

1. Simple section square tube: square square tube, rectangular square tube.

2. Complex section square tube: flower square tube, open square tube, corrugated square tube, shaped square tube.

Surface treatment classification

Square tube according to surface treatment: hot dip galvanized square tube, electro galvanized square tube, oiled square tube, pickled square tube.

Use classification

Square tube by application: decorative square tube, machine tool equipment square tube, machinery industry square tube, chemical industry square tube, steel structure square tube, shipbuilding square tube, automotive square tube, steel beam square tube, special purpose square tube.

Wall thickness classification

Square tube is classified by wall thickness: super thick wall square tube, thick wall square tube and thin wall square tube.

Technical parameters

Thick-walled square tube specification table (mm) Thick-walled rectangular pipe specification table (mm)
16~34×0.4~2.0 380~500×380~500×8.0~30.0 10~20×20~40×0.6~12.0 250~300×100~250×6~30.0
35×35×1.0~4.0 Another re-drawing specifications are as follows 20×50×1.0~2.0 400×250×8~30.0
38×38×1.0~4.0 550×550×10.0~40.0 22~40×35~100×0.9~5.0 400~×300×8~30.0
40~95×40~95×1.0~8.0 600~1000×600~1000×10.0~50.0 25×40×0.9~3.75 450~500×200~450×8~30.0
100×100×2.0~8.0   50×60×2.0~5.0 Another re-drawing specifications are as follows
120~350×120~350×4.0~30.0   50~200×60~150×2.0~12.0 600~1000×200~800×10~28.0

Product detail pictures:

Best quality Alloy Pipe - Pre-Galvanized Square/Rectangular Tube – JINBAICHENG detail pictures

Best quality Alloy Pipe - Pre-Galvanized Square/Rectangular Tube – JINBAICHENG detail pictures

Best quality Alloy Pipe - Pre-Galvanized Square/Rectangular Tube – JINBAICHENG detail pictures

Best quality Alloy Pipe - Pre-Galvanized Square/Rectangular Tube – JINBAICHENG detail pictures


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We retain bettering and perfecting our merchandise and service. At the same time, we do the job actively to do research and improvement for Best quality Alloy Pipe - Pre-Galvanized Square/Rectangular Tube – JINBAICHENG , The product will supply to all over the world, such as: Rome, Albania, Hyderabad, With the principle of win-win, we hope to help you make more profits in the market. An opportunity is not to be caught, but to be created. Any trading companies or distributors from any countries are welcomed.
  • We have been cooperated with this company for many years, the company always ensure timely delivery ,good quality and correct number, we are good partners.
    5 Stars By Adelaide from Venezuela - 2017.06.25 12:48
    Hope that the company could stick to the enterprise spirit of "Quality, Efficiency, Innovation and Integrity", it will be better and better in the future.
    5 Stars By Ella from France - 2018.02.04 14:13
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