Seamless Steel Pipe

 Quality requirements for carbon steel pipes: 1. Chemical composition Requirements are put forward for the content of harmful chemical elements As, Sn, Sb, Bi, Pb and gas N, H, O, etc. In order to improve the uniformity of the chemical composition in the steel and the purity of the steel, reduce the non-metallic inclusions in the tube billet and improve its distribution state, the molten steel is often refined by refining equipment outside the furnace, and even the tube billet is remelted and refined by an electroslag furnace. 2. Dimensional accuracy and shape The geometric ruler method of carbon steel pipes should include the diameter of the steel pipe: wall thickness, ellipticity, length, curvature, inclination of the end face of the pipe, bevel angle and blunt edge, cross-sectional size of the opposite sex steel pipe, etc. 3. Surface quality The standard specifies the requirements for "surface finish" of carbon steel seamless pipes. Common defects include: cracks, hairline...

 The common defects of spiral pipes include pores, slag inclusions, incomplete penetration, incomplete fusion and cracks, etc. The Xinyue Steel will introduce the causes of these defects below. The defects that are prone to occur in the submerged arc welding zone of the spiral welded pipe are: 1. Involvement of welding slag Weld slag is a part of welding slag remaining in the weld metal. 2. Poor penetration The metal overlap of the inner and outer welds is not enough, and sometimes there is no penetration. This situation is called insufficient penetration. 3. Undercut The undercut is a V-shaped groove along the centerline of the weld, and the undercut is produced under improper conditions such as welding speed, current, and voltage. Among them, if the welding speed is too high, it is more likely to cause undercut defects than if the current is not suitable. 4. Bubbles Most of the bubbles occur in the center of the weld bead. The main reason is that hydrogen is still hidden in the w...

Project location：Australia Product：ERW Steel Pipe Specifications：100NB-750NB Standard and material：API 5L GRB / ASTM A53 GRB/AS1163 GR350LO / API 5L GRX42 Usage：stock Estimated arrival time：July, 2023 This order is still for welded pipes supplied to well-known local inventory clients in Australia. This customer has been cooperating with Xinyue for over decades and has not had any quality issues. After years of cooperation, the customer’s recognition of Xinyue brand’s steel pipe products is extremely high. So over the years, orders have been continuously sent to Xinyue. Of course, the continuous turnover of orders not only stems from customers’ recognition of quality, but also from the service of Xinyue’s excellent sales. Xinyue service always runs through the entire process of order execution. Although we have cooperated for many times, we still carefully confirm every detail with customers in advance every time from their inquire, such as product specifications, dimensions, appearance...

 Year: 2023 Country：Malasiya Quantity: 616 MT Product: CHS STEEL PIPE Project: Malasiya MASJID PUSAT ISLAM PAHANG Project Standard and Specification: EN10219 S275J0H CHS STEEL PIPE https://www.xysteelpipe.com/malasiya-masjid-pusat-islam-pahang-project/

 Year: 2023 Country：Vietname Quantity: 638 MT Product: Steel Structure Project: Vietname Coal Mining Construction Project Standard and Specification: JIS SM400, SM490, SM540 https://www.xysteelpipe.com/vietname-coal-mining-construction-project/