Yingde large diameter steel pipe

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Yingde large diameter steel pipe
Yingde large diameter steel pipe six Bao Liu Tel: 18,033,242,424 18,823,102,210 large diameter steel pipe coating large diameter steel pipe in large diameter spiral welded pipe and high-frequency welded pipe made of plastic coating on the basis of a maximum orifice diameter 1200mm, can be applied according to different needs polyvinyl chloride (PVC), polyethylene (PE), epoxy resin (EPOZY), and other various properties of the plastic coating, good adhesion, corrosion resistance, can be resistant to acid, alkali and other chemical corrosion, no poison, no rust, wear and impact resistance, resistance to penetration strong, smooth pipe surface, does not adhere to any substance that can reduce transmission time of resistance, increase traffic and transportation efficiency, reduce delivery pressure loss. Coating solvent-free, no leaking substances, and thus will not contaminate the conveyed medium, thus ensuring the purity and health of the fluid in the range of -40 ℃ to + 80 ℃ thermal cycling can be used interchangeably, not aging, no cracks, which can be used in harsh environments such as cold zone. Large diameter coated steel is widely used in engineering fields of water, natural gas, petroleum, chemical, pharmaceutical, telecommunications, power, marine and other Chinese name of the large-diameter pipe size than the outer diameter 100MM good adhesion properties, corrosion resistance, temperature can be resistant to acid steel weight formula to 80 ℃ -40 ℃ + [(OD - Wall Thickness) * Thickness] expression * 0.0246615 = kg / m (weight per meter) diameter expression Yingde large diameter steel pipe of large diameter steel pipe diameter approach should meet the following requirements: a water-gas delivery pipe (galvanized or galvanized), cast iron pipes and other pipes, pipe diameter should be expressed in nominal diameter DN; two seamless steel tubes, welded steel pipe (straight seam or spiral), brass stainless steel pipe and other pipes, pipe diameter to the outer diameter × thickness should represent; three reinforced concrete (or concrete) pipes, clay pipes, acid ceramic tubes, cylinders and other tile pipe, the diameter should be expressed to the inner diameter d; 4 plastic pipes, diameter should be according to the standard method of product representation; 5 When the designs are expressed with nominal diameter DN diameter, the proper nominal diameter DN and the corresponding product specification table. Hard PVC pipe drainage construction specifications with de (nominal diameter) × e (nominal wall thickness) represent (GB 5836.1-92) for water supply polypropylene (PP) pipe specifications expressed by de × e (nominal diameter × wall thick) provides a length delivery, usually the length (also known as non-random length): Where the length within the length of the standard required and no fixed length requirements are usually called length. Such as structural pipe standards: hot rolled (extrusion, expansion) steel 3000mm ~ 12000mm; cold drawn (rolled) steel 2000mmm ~ 10500mm. 2. Length Length: Length Length should be within the usual length, is required by the contract size of a fixed length. But the actual operation is the absolute cut-length cut is unlikely, and therefore the standard of length specifies the length of the positive deviation allowed. 3, double length: double length should be within the normal length, the contract should specify the single and multiple double length constitute the total length (eg 3000mm × 3, 3 multiple namely 3000mm and an overall length of 9000mm). In practice, the total length should be based on the allowed positive deviation plus 20mm, coupled with the double length of each single incision margin should remain. If the standard deviation is no double length and cutting margin requirements by both parties and specified in the contract negotiations. Times longer scale length with the same length, producers will bring a significant reduction in the yield, so the producers proposed fare increase is reasonable, its rate of increase with the length of the rate of increase is basically the same length. 4, in length: length of the range within the usual length, when the user requires a fixed range when the length of which is required in the contract. Production process round tube → heating → perforation → three-roll rolling, rolling or extrusion → → set off pipe diameter (or reducing) → cooling → straightening → hydrostatic test (or testing) → mark → storage a pressure steel algorithm: to know the specifications of seamless steel pipe diameter seamless pipe wall thickness requirements can withstand the pressure calculation method (tensile steel of different materials differ) pressure = (thickness of the material tensile strength steel * 2 *) / ( diameter * factor) two: to know seamless seamless steel pipe diameter and wall thickness to withstand pressure demand calculation method: wall thickness = (pressure * diameter * factor) / (2 * tensile strength steel material) three: steel pressure coefficient representation: Pressure P <7Mpa coefficient S = 8 7 17.5 coefficient S = 4 [2] the mechanical properties of the mechanical properties of large-diameter steel pipe is to ensure that the end-use of large diameter steel pipe properties (mechanical properties) is an important indicator, it takes large diameter steel pipe of large diameter steel pipe depends on the chemical composition and heat treatment of steel pipe system. So depending on the application requirements, from tensile strength, yield point elongation in these areas to introduce specific mechanical properties of large diameter spiral pipe. A tensile specimens during stretching, the pull-off exposure to the most vigorous (Fb), the original cross-sectional area of ??the specimen to the stress (σ) (So) income, known as the tensile strength (σb ), in units of N / mm2 (MPa). It represents a metal material to resist damage under tension maximum capacity. Metallic material has a yield 2 yield point phenomenon, the specimen during the tensile force is not increasing (constant) could continue stress elongation, called yield point. If power down occurs when, should distinguish between the lower yield point. Unit yield point of N / mm2 (MPa). 3 percentage elongation in tensile test specimen fractured gauge increased its percentage of the length of the original gauge length, called elongation. With σ expressed in units of%. Spiral steel pipe, spiral pipe, steel plants, bridges top tube, steel casing, steel coil pipe piling pipe, steel pipe piles, water pipes, billboards column tube, water, piling steel casing pile casing Chaozhou, Guangdong, Guangzhou, Shenzhen, Foshan, Jiangmen Zhanjiang, Maoming, Yangjiang, Zhaoqing, Huizhou, Meizhou, Shanwei, Heyuan, Qingyuan, Dongguan, Zhongshan, Zhuhai, Shantou, Jieyang, Yunfu, Shaoguan Nanning, Beihai, Qinzhou Fangchenggang Guigang Yulin Chongzuo guest Baise, Hechi Hezhou Liuzhou, Guilin, Haikou, Sanya, Hainan Wuzhou Ji'an, Jiangxi Ganzhou, Fuzhou, Shangrao, Yichun spiral galvanized spiral, spiral steel pipe Factory price spiral, spiral pipe manufacturers, large diameter steel pipe. Spiral steel pipe, spiral pipe, welded steel pipe, bridge jacking, steel casing, piling pipe, steel pipe piles, water pipes, billboard products provide a sand column pipe, corrosion, zinc, processing, and other large-diameter steel pipe Yingde