Year1
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Tang Manager
Welded steel pipe, also known as welded pipe, is a steel pipe made of steel plates or strips that are welded after being curled and formed. They are usually fixed in length. The production process of welded steel pipes is simple, the production efficiency is high, there are many varieties and specifications, and the equipment investment is low, but the general strength is lower than that of seamless steel pipes.
Welded steel pipes are divided into straight seam welded pipes and spiral welded pipes according to the form of the weld. Classification by production method: process classification arc welded pipe, resistance welded pipe, (high frequency, low frequency) gas welded pipe, furnace welded pipe.
Smaller diameter welded pipes use straight seam welding, while large diameter welded pipes mostly use spiral welding. According to the shape of the end of the steel pipe, welded pipes are divided into circular welded pipes and special-shaped (square, rectangular, etc.) welded pipes are divided into mines according to different materials and uses. Welded steel pipes for fluid transportation, galvanized welded steel pipes for low-pressure fluid transportation, electric welded steel pipes for belt conveyor rollers, etc. According to the specification and size table in the current national standard, sort by outer diameter*wall thickness from small to large.
Commonly used materials for welded pipes are:,, #b, etc.
The blank used for welded steel pipes is steel plates or strips. Due to their different welding processes, they are divided into furnace welded pipes, electric welded (resistance welded) pipes and automatic arc welded pipes. Because of their different welding forms, they are divided into two types: straight seam welded pipes and spiral welded pipes. Because of their end shapes, they are divided into round welded pipes and special-shaped (square, flat, etc.) welded pipes. Welded pipes are divided into the following varieties due to their different materials and uses:
B/ (welded steel pipes for low-pressure fluid transportation). Mainly used to transport water, gas, air, oil, heating hot water or steam and other general lower pressure fluids and other pipes. Its representative material is: grade steel.
B/ (Welded steel pipe for mining fluid transportation). It is mainly used for straight seam welded steel pipes for mine air pressure, drainage and shaft gas discharge. Its representative material is grade B steel.
B/ (Stainless steel welded steel pipe for mechanical structure). Mainly used in machinery, automobiles, bicycles, furniture, hotel and restaurant decoration and other mechanical parts and structural parts. It represents material, b, etc.
B/ (Stainless steel welded steel pipe for fluid transportation). Mainly used to transport low-pressure corrosive media. The representative materials are, etc.
There are also welded stainless steel pipes for decoration (B), stainless steel welded pipes for building decoration (), and welded steel pipes for heat exchangers (B).
Scope of application
The product is widely used in water supply projects, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. It is one of the twenty key products developed in our country. For liquid transportation: water supply and drainage. For gas transportation: coal gas, steam, liquefied petroleum gas. Structural use: used as piling pipes, pipes for bridges, docks, roads, building structures, etc.
Specification table of straight seam welded pipe, nominal size, national standard thickness
& calculation formula
Carbon steel straight seam welded pipe
Weight per meter: =() * * .
Note: (Outer diameter) (Wall thickness)
Grunde Pipe Industry
Steel pipe manufacturing ordering guide:
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, price commitment development and website promotion. Commitment: The lowest price. If the price is found to be lower than ours, we will return double the price. Supervision is welcome.
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Ordering phone number
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&Payment method:, order and sign a purchase and sale contract, pay % of the deposit as a deposit, and the contract will take effect when the payment is received
, Cash in stock, full payment for loading
Changsha welded pipe manufacturer, spiral welded pipe specifications, straight seam welded pipe material, delivery method: The supplier is obliged to help the demander contact the freight logistics or the demander himself contact the truck, during The freight and other charges incurred shall be settled between the purchaser and the driver.
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