The main difference between annealing and normalizing: 1. The cooling rate of normalizing is slightly faster than that of annealing, and the degree of supercooling is larger 2. The structure obtained after normalizing is relatively fine, and the strength and hardness are higher than that of annealing. The choice of annealing and normalizing: 1. For low carbon seamless steel…
Read MoreProject Location: Peru Product：SMLS STEEL PIPE with NPT COUPLING Specification：69.3*3.91*5.8M Standard and Material：API 5L PSL1 GR B Usage: Oil Project Inquiry Time：02.2022 Order Time：06.2022 Shipping Time：07.2022 In February 2022, Xinyue Sales Department received an active inquiry from the customer, to provide Peru Oil Company with seamless steel pipes with NPT thread and couplings . Because the terminal is an…
Read MoreDuring the rolling process of seamless steel pipes, due to the influence of the stability of the machine and peripheral equipment and the uncertainty factors in the production process, the product dimensions often exceed the tolerance range specified in the product standard. The situations are as follows: 1. Uneven wall thickness 1)Features: The wall thickness of the steel pipe…
Read MoreProject location：Kenya Product：Seamless steel pipe & pipe fittings Standard and material：API 5L GrB PSL1 Specifications：21.3-219mm*12000mm Application：Pipeline construction Inquiry time：2022.01.09 Order time：2022.02.13 Departure time：2022.07.05 Estimated arrival time：2022.09.15 The client is an African project group company. We met in 2020. During that time, xinyue has participated in 4-5 project bids from their company. After frequent communication with customers and video conferences,…
Read More1. Grinding of thick-walled seamless nozzle: After cutting, use an angle grinder to grind the plastic layer of the nozzle. Its purpose is to prevent the plastic layer from melting or even burning during the flange welding process, damaging the pipe, and grinding the nozzle plastic layer with an angle grinder. 2. Thick-walled seamless pipe plastic coating treatment:After polishing,…
Read MoreInward folding is a common quality problem in the production of seamless steel pipes. It is the irregularly distributed sheet-like folds and spiral-like folds on the inner surface of the steel pipe, and the edges of the defects are mostly serrated. There are two main reasons for the internal folding defects: the quality of the continuous casting tube blank…
Read MoreThe problem of uneven wall thickness of large-diameter seamless steel pipes is relatively common in the production of seamless steel pipes, and it is also a headache for customers. The unevenness of the thick-walled seamless steel pipe is mainly reflected in the uneven spiral wall, the uneven linear wall thickness, and the thickness of the head and tail is…
Read MoreThe order project to be introduced today the project is used in Bangladesh, which is the first cooperation between Xinyue and customers. The products mainly include seamless steel pipes, pipe fittings and thermal insulation layer. Material：ASTM A106 Specification:273mm*9.27mm*6m Usage:hot water and heating supply system project Timeline: Received the inquire on Nov,2021 Signed the contract on Nov,2021 Delivery time…
Read MoreXINYUE STEEL GROUP set up several production bases in Tianjin & Hebei Province, manufacturing ERW Steel Pipe, SSAW Steel Pipe, LSAW Steel Pipe, Seamless Steel Pipe, Scaffolding system and couplers, RHS, SHS, etc.
