Introduction to Welded Pipe Technology CS35 Parts Front fog lamp changan CS35,Brake System Components Changan,Rear Wheel Hub Changan Cs35,Front Wheel Hub Cs35 Chongqing Zhongheng Chuangxin Auto Parts Co., Ltd , https://www.zhcx-autoparts.com
High-frequency resistance welded (ERW) steel pipes differ from submerged arc welded pipes in their welding process. During ERW, no additional welding materials are used. The weld is formed through a recrystallization process rather than melting, which ensures that the chemical composition of the weld matches that of the base metal. After welding, the pipe undergoes an annealing process, which helps reduce internal stresses caused by cold working and welding. As a result, ERW steel pipes generally exhibit superior mechanical properties compared to other types.
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Straight seam submerged arc welded pipes (UOE) are manufactured using a post-weld cold expansion process, which enhances the dimensional accuracy of the final product. This makes UOE pipes ideal for applications where precise joint alignment is essential. The welding quality is also more consistent, and some internal stresses are eliminated during the manufacturing process. Furthermore, multi-wire welding techniques—such as three- or four-wire systems—are often employed. These methods reduce heat input and minimize the impact on the heat-affected zone of the base material. The first wire in the multi-wire system helps relieve welding-induced stresses, thereby improving the overall mechanical performance of the pipe. Compared to spiral welded pipes, UOE pipes have shorter welds, resulting in fewer potential defects and better structural integrity. For high-pressure pipelines, the base material of straight-seam pipes can be fully inspected using ultrasonic testing, meeting stringent safety requirements. However, despite their superior performance, UOE pipes tend to be more expensive, making them less accessible for budget-conscious users.
Spiral welded pipes feature a helical weld pattern, which distributes stress across a larger area. While this design can help avoid the direction of maximum internal stress, it also means that the weld heat-affected zone—where mechanical properties are typically weaker—is spread over a longer length. This can affect the overall strength of the pipe under high-pressure conditions. Additionally, the irregular shape and height of the weld seam make external corrosion protection more challenging. Gaps between adjacent welds may occur, increasing the risk of corrosion. To address this issue, some manufacturers apply horizontal winding techniques with three-layer or two-layer polyethylene coatings. This approach effectively improves the corrosion resistance of spiral welded pipes, making them more suitable for long-term use in harsh environments.
Chongqing Zhongheng Chuangxin Auto Parts Co., Ltd
We sell Changan CS35 Parts,
Including Engine accessories: mainly including engine, Engine Assembly, throttle body, intake manifold, exhaust manifold, cylinder block, cylinder head, camshaft, crankshaft, connecting rod, piston, piston ring, gasket, Spark Plug, oil seal, belt, tensioner, engine repair kit, timing kit, etc.
Transmission system accessories: mainly including Clutch , Gearbox , gear lever assembly, and reducer. Transmission shaft, etc.
Brake system accessories: mainly including brake master cylinder, brake caliper, brake assembly, brake pedal assembly, steering knuckle, Brake pads, wheel hub bearings, brake discs, etc.
Steering system accessories: mainly including Steering Gear, ball joint pin, steering rod, steering transmission shaft, etc.
Suspension accessories: mainly including rear axle, front subframe, Shock Absorber, stabilizer bar, front swing arm, stabilizer bar ball joint, engine suspension cushion, etc.
Electrical instrument accessories: mainly including sensors, wiring harnesses, combination instruments, window regulator switches, windshield spray cans, light switches, wiper switches, batteries, etc.
Automotive lighting fixtures: including decorative lights, fog lights, ceiling lights, headlights, brake lights, reverse lights, turn signals, etc.
Automotive interior accessories: interior panel, steering wheel, dashboard, auxiliary dashboard sunshade, etc.
Automotive exterior accessories: including wheel cover, body color strip stickers, license plate holder, weather shield, etc.
Car body and accessories: front bumper, rear bumper, front bumper grille, fenders, front doors, rear doors, door outer guards, back door, wipers, car glass, seat belts, airbags, etc.
Cooling System Components: radiator, radiator fan, expansion tank, condenser, air conditioning compressor, evaporator, air conditioning compressor suction pipe, air conditioning compressor discharge pipe, etc.
Complete variety, stable quality, welcome to purchase