Company News

• 2025-03-24

  Difference between precision steel pipe and seamless steel pipe

  Precision seamless steel pipe is a kind of high-precision steel pipe after cold rolling or cold drawing; full name: cold-rolled precision seamless steel pipe. Because the inner and outer walls of precision seamless steel pipe have no oxide layer, high pressure without leakage, high precision, high finish, no deformation after cold bending, no cracks after expansion and flattening, etc., it is mainly used to produce pneumatic or hydraulic components, such as cylinders or oil cylinders, which are all made of seamless pipes. The chemical composition of precision seamless steel pipes is carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, chromium Cr.

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• 2025-03-21

  Important tips for welding galvanized pipes

  Galvanized pipes are steel pipes coated with a layer of zinc to improve their corrosion resistance. According to the different galvanizing methods, galvanized pipes can be divided into hot-dip galvanized pipes and cold-dip galvanized pipes. Hot-dip galvanizing has a thicker layer and stronger corrosion resistance, while cold-dip galvanizing (electrogalvanizing) has a thinner layer and is mostly used in places with lower corrosion protection requirements. Galvanized pipes are widely used in construction, petroleum, chemical industry, agricultural irrigation and other fields, but their welding is more difficult than ordinary carbon steel pipes and requires special attention.

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• 2025-03-21

  The Ultimate Guide to High-Carbon Steel Pipes

  High carbon steel is a type of steel that has a higher carbon content than other steels. Typically, it has a carbon content of 0.60% to 1.5%. This results in a harder and stronger material that is often used for tools and machine parts that require high durability and strength.

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• 2025-03-20

  ASTM A179 Heat Exchanger Seamless Tubes Specs

  ASTM A179 (ASME SA179) is a specification for seamless, cold-drawn, low-carbon steel tubing with outside diameters from 1/8 to 3 inches [3.2 to 76.2 mm] for use in tubular heat exchangers, condensers, and similar heat transfer equipment.

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• 2025-03-20

  OCTG Casing and Tubing Size Chart

  OCTG stands for Oil Country Tubular Goods and covers a range of pipe products that are critical to oil and gas production, especially drilling operations. These products meet API or similar industry standards and include drill pipe, steel casing, tubing, couplings, connections and accessories for use in the onshore and offshore oil industry.

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• 2025-03-19

  How to Identify the Authenticity of Galvanized and Seamless Pipes

  How to distinguish true and false hot-dip galvanized seamless steel pipes with naked eyes?Now there is a so-called hot-dip galvanized fluid pipe on the market, also called de-galvanized seamless pipe, which is actually a processed high-frequency welded pipe. The original weld is planed or ground off with special equipment and then galvanized. Now I will share with you how to identify this type of pipe:

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• 2025-03-19

  Galvanized Seamless Steel Pipe Quality Check Guide

  Galvanized seamless steel pipes come in two types: hot-dip galvanizing and electro-galvanizing (cold galvanizing). Hot-dip galvanized pipes have a thicker zinc coating, providing uniform coverage, strong adhesion, and long service life. In contrast, electro-galvanized pipes are more cost-effective but offer lower corrosion resistance and a less smooth surface.

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• 2025-03-18

  Grades of ASTM A500 Steel Structural Tubing

  ASTM A500 is a standard specification set by ASTM International for cold-formed welded and seamless carbon steel tubing used in structural applications. This standard outlines the requirements for tubes that are used in bridges, buildings, and other structures that require welding, bolting, or riveting. It includes a wide range of tubing shapes such as round, square, rectangular, and special shapes made from carbon steel. Known for its strength and durability, ASTM A500 steel structural tubing is a staple in many construction and engineering projects.ASTM A500 is cold-formed welded seamless carbon steel structural tubing intended for welded, riveted or bolted bridge and building structures and general structural purposes.​

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• 2025-03-18

  What is the difference between MS and GI ?

  Ever wondered what sets Galvanized Iron (GI) apart from Mild Steel (MS)? While both are steel-based materials, GI stands out for its zinc coating, making it highly resistant to rust—perfect for water pipes and outdoor structures. MS, on the other hand, is all about flexibility and affordability. It’s the go-to choice for welding, machinery, and construction projects. The key difference? GI fights corrosion better, while MS offers more versatility at a lower cost. Picking the right one depends on what you need it for!

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• 2025-03-17

  Hot rolled seamless steel pipe specifications

  Seamless steel pipe is made of a whole round steel through perforation, and the steel pipe without weld on the surface is called seamless steel pipe. According to the production method, seamless steel pipe can be divided into hot-rolled seamless steel pipe, cold-rolled seamless steel pipe, cold-drawn seamless steel pipe, extruded seamless steel pipe and jacking pipe.​Hot-rolled seamless steel pipe is a large category of seamless steel pipes, which are divided according to the production method. Hot rolling is relative to cold rolling, which is rolling at room temperature, while hot rolling is rolling above the recrystallization temperature. Seamless steel pipe is relative to welded steel pipe. Seamless steel pipe is usually made by perforating round steel and then processing, while welded steel pipe is usually made by welding steel plates in different ways.

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• 2025-03-17

  How to judge the quality of steel pipes?

  Steel pipes are widely used in high, medium and low pressure fluid transportation pipelines such as oil, natural gas, water, steam, and coal gas, as well as steel pipes for piling, bridges, and buildings. Good quality steel pipes are convenient and beneficial to the people, but while steel pipes are developing rapidly, some counterfeit products will appear on the market one after another. So how to judge the quality of steel pipes?

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• 2025-03-14

  Comprehensive introduction of 3PE Coating anti-corrosion steel pipe

  3PE, also called 3LPE, 3PE anti-corrosion steel pipe is a coating method for carbon steel pipe. 3PE anti-corrosion steel pipe refers to a steel pipe whose outer wall is protected by a three-layer polyethylene (3PE) anti-corrosion coating. 3PE anti-corrosion steel pipe parent materials include seamless steel pipes, spiral steel pipes and straight seam steel pipes. Whether it is welded steel pipes, stainless steel pipes, alloy steel pipes, nickel alloy pipes, CRA coated seamless steel pipes or lined pipes, 3PE can be applied to the pipes. The three-layer polyethylene (3PE) anti-corrosion coating has been widely used in the oil pipeline industry for its good corrosion resistance, water vapor permeability resistance and mechanical properties.

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