Welded pipes are widely used in various industries and are typically made from a range of steel grades. Common materials include Q235A, Q235C, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, and similar alloys. These materials offer different mechanical properties and corrosion resistance, making them suitable for various applications.
The raw materials used in the production of welded steel pipes are usually steel plates or steel strips. Depending on the welding process, they can be categorized into furnace-welded pipes, electric resistance welded (ERW) pipes, and automatic arc welded pipes. Additionally, based on the welding method, they can be divided into straight seam welded pipes and spiral welded pipes. In terms of shape, they can also be round, square, flat, or other special shapes.
Welded pipes come in several types depending on their material and intended use. For example:
GB/T3091-2001 specifies galvanized welded steel pipes for low-pressure fluid transportation. They are commonly used to transport water, gas, air, oil, and heating steam. The main material used is Q235A steel.
GB/T14291-2006 refers to welded steel pipes for mineral fluid transportation, mainly used in mining applications such as pressure, drainage, and shaft discharge. The representative material is Q235A or B grade steel.
GB/T14980-1994 covers large diameter electric welded steel pipes for low-pressure fluid transportation. They are used for conveying water, sewage, gas, air, and heating steam. The standard material is Q235A steel.
GB/T12770-2002 includes stainless steel welded pipes for mechanical structures. These are often used in machinery, automotive parts, bicycles, furniture, and building decoration. Materials like 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, and 0Cr18Ni11Nb are commonly used.
GB/T12771-1991 outlines stainless steel welded pipes for fluid transportation, especially for low-pressure corrosive media. Common materials include 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, and 00Cr17Ni14Mo2.
In addition, there are specialized standards such as GB/T 18705-2002 for decorative stainless steel welded pipes, JG/T 3030-1995 for building decoration, and YB4103-2000 for heat exchanger welded pipes. These standards ensure that the pipes meet specific performance and quality requirements for their respective applications.
1. Bathroom spray gun, can also be called a women's washer.
2. The general spray gun comes with a pressurization module, often used as a flushing toilet, but also can facilitate flushing the corner of the toilet, cleaning the basin, cleaning the broom and other functions, after installation, you will find that the function is simply too humane. 3. When installing, you only need to use a three-way angle valve at the toilet access. One way the water goes into the toilet and the other way into the spray gun. There are multiple options for spray gun water pipes, among which explosion-proof bellows and telephone line hoses are the most commonly used, especially telephone line hoses are the most widely used because they do not take up space and are highly stretchable.
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