Hunan Great Steel Pipe Co., Ltd. products

Usage: Applicable to the general structure, mechanical structure with seamless steel tubes.

Shape: Hollow Sections: Square, Rectangular, Round, Triangular, Hexagonal, Eliptical Hollow sections Scaffolding.

Shape: Hollow Sections: Square, Rectangular, Round, Triangular, Hexagonal, Eliptical Hollow sections Scaffolding.

Mild steel pipes and is one of the low carbon steel pipes with low carbon content and the lesser hardness. Plus a small amount of pearlite microstructure of ferrite is characterized by low hardness (HB 100-130), low intensity (σb 372 ~ 470MPa) and high plasticity (δ 24 percent to 36 percent), and formability and good weldability.

Black steel: Black iron is the uncoated steel and is also called as black steel. When steel pipe is forged, a black oxide scale forms on its surface to give it the finish which is seen on this type of pipe. Because steel is subject to rust and corrosion, the factory also coats it with protective oil. Those black steel are used for manufacturing pipe and tube, which will not rust for a long time and requires very little maintenance. It is sold in standard 21-foot lengths TBE.

Pipe has three layer PE antisepsis structure: the first layer with epoxy powder (FBE> 100um), the second layer with adhesive (AD), 170 ~ 250um, the third layer with polyethylene (PE) 2.5 ~ 3.7mm. integration of them and solid steel pipe make form a good coating. Diameter range 60mm-1420mm, wall thickness 2.5-18mm, which is a good anti-corrosion method, generally can improve the service life of 50 years, not only extended the replacement cycle of the underground plumbing, and significant cost savings for the provides a strong role in nation-building. 3PE anti-corrosion is the most commonly used method of anti-corrosion, in addition to 2PE, 2PP, 3PP, their manufacturing process is similar to but different raw materials, this anti-corrosion characteristics of the simple fabrication process, the preservative effect, inexpensive pipe manufacturing industry generally agree that corrosion.

Standards: ASTM A106 (ASME SA106). Products mainly used: apply to bending, curling and similar forming process.. The main products of steel / steel grade: Gr.A; Gr.B; Gr.C.. Specifications: diameter: 10.3 to 114.3 mm thickness: 0.8 to 12 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe.. Chemical composition and mechanical properties: ASTM A333.

According to the different applications, as for cold draw seamless steel pipe ,hot rolled seamless steel pipe or the hot expansion steel pipe seamless carbon steel tubes can be divided into low pressure pipe medium pressure pipe, high pressure boiler pipe, alloy steel pipe, petroleum cracking pipe, and for construction, for linepipe.

Electric Resistance Welded steel tube used in oil drilling and machinery manufacturing, etc. Usage: Used for low pressure liquid delivery, such as water, gas, and oil.

High-pressure steel pipe is used in manufacturing high quality carbon steel of high pressure vessels and piping,alloy structural steel and stainless steel seamless pipe.Manufacturing methods are divided into hot-rolled (extrusion, expansion) and cold drawn (rolled). Among them, touter diameter of hot-rolled (extrusion, expansion) steel tubes range is 2.0 ~ 70mm;outer diameter of cold drawn (rolled) steel pipe range is 10 to 108mm;wall thickness range of 2.0 ~ 13mm.