Reasons for the rust of spiral welded pipe

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The difference between high-quality seamless steel tubes and inferior seamless steel tubes

　　In daily steel procurement, the most irritating and irritating thing is the purchase of inferior seamless steel tubes, which affects product quality. How to identify inferior seamless steel pipe? Here we identify through the following methods: 　　1, poor quality seamless steel pipe surface is prone to scarring. 　　Mainly due to two reasons: 　　(1) There are many impurities in the inferior seamless steel tubes and the materials are not uniform. 　　(2) Inadequate guide equipment for poor quality pipe manufacturers is particularly prone to sticking steel. Contaminated pipes tend to produce scars when they bite into the roll. 　　2, poor quality seamless steel pipe is prone to tube folding. 　　The so-called folding is a variety of fold lines formed on the surface of the seamless steel pipe, and this defect often runs through the entire product. The reason for the folding is that the manufacturer is pursuing high efficiency in order to increase the output. In the production process, ...
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Repeated order from regular Singapore Customer–ERW Steel pipe

Project location：Indonesia Product：ERW steel pipe Standard and material：ASTM A53 GRB;EN10219 S355J2H Specifications：88.9*5.49*6000mm;273.1*12.5*11800mm;355.6*12.5*6000mm;406.4*12.5*6000mm Application：stock use Arrival time：2024.1.10 This order is for a customer in Singapore. After receiving goods of the first order, the customer gave great recognition to Xinyue’s comprehensive services and product quality. We signed a second contract soon. The delivery date required by the customer for this order was very urgent. Xinyue formulated a plan and mobilized rescources immediately. We finally delivered the product on time while ensuring that the product met specifications and quality requirements. Xinyue is committed to establishing long-term partnerships with customers. We provide customers with personalized solutions and professional technical support to meet the needs of different projects and markets. We adhere to customer satisfaction as the center and continuously improv...
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GCr15 tube heat treatment process parameters

　　GCr15 Pipe is a high carbon chromium bearing steel with less alloy content, good performance and wide application. After quenching and tempering, it has high and uniform hardness, good wear resistance and high contact fatigue performance. The cold working of the steel is medium in plasticity, the cutting performance is general, the welding performance is poor, the sensitivity to white spots is large, and the temper brittleness is obtained. 　　Chemical composition / element content (%) 　　C: 0.95-1.05 Mn: 0.20-0.40 Si: 0.15-0.35 S: <=0.020 P: <=0.027 Cr: 1.30-1.65 　　The heat treatment system is: steel bar annealing, annealing or oil quenching at 830-840 °C. 　　Heat treatment process parameters: 　　1. Ordinary annealing: heating at 790-810 °C, after the furnace is cooled to 650 °C, air cooling - HB170-207 　　2. Isothermal annealing: 790-810 ° C heating, 710-720 ° C isothermal, air cooling - HB207-229 　　3. Normal fire: 900-920 ° C heating, air cooling - HB270-390 　　4. H...
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