Preshipment Inspection J55, K55, N80, L80, C90, C95, T95, P110, M65 Customized Size Surface Colour Ral API Steel Pipe with ISO Certificate

Zhengde API pipeline steel pipe is a pipeline pipe belonging to the American Petroleum Standard. The pipeline pipe is used to transport the oil, steam, and water pumped out of the ground to the oil and gas industry enterprises through the pipeline pipe. Line pipes include seamless pipes and welded steel pipes, and the pipe ends have flat ends, threaded ends and socket ends; the connection methods are end welding, collar connection, socket connection, etc.
The production of high-grade line pipes adopts micro-alloying heat treatment process. The production cost of stainless steel seamless pipes is obviously higher than that of welded pipes, and with the improvement of steel grades, such as X80 and above steel grade line pipes, there is no carbon equivalent limit. The conventional process of seam steel pipe is difficult to meet the requirements of users; all 12Cr1moV alloy pipe manufacturers are carrying out scientific research work to improve the corrosion resistance of their line pipes and stabilize the performance in low temperature and high temperature environments.
Seamless steel pipe with hollow section, a large number of used for conveying fluid pipeline, such as conveying oil, natural gas, gas, water and some solid material pipeline.  Compared to the steel pipe and round steel solid steel bending torsional strength phase at thesame time, the weight is lighter, is a kind of economic cross section steel, widely used in the manufacture of structural and mechanical parts, such as petroleum drill pipe, auto transmission shaft, bicycle frame and construction of steel scaffolding is used with steel pipe manufacturing annular parts, such as can improve material utilization, simplifying the manufacturing process, material saving and processing time,  Has been widely used in steel pipe manufacturing .
Shandong Zhengde Metal Manufacturing Co., Ltd. is a professional steel production enterprise with more than ten years of experience integrating R&D, production and sales. In line with the development concept of "quality conquers the world, service makes the future". We are committed to strict quality control and thoughtful customer service, and our experienced staff will discuss your needs with you at any We have offices in Binzhou, Shandong, Jinan, Shandong, Liaocheng, Shandong,and Wuxi, Jiangsu to failitate customer reception and visits. Our company's main products are galvanized steel sheets, galvanized steel coils, PPGI/PPGL, roof panels, cold-rolled steel coils, aluminum coils, stainless steel coils, carbon steel coils and other steel plates and round steel pipes. On the basis of complete and diversified product supply, high quality,reasonable price and good service, it satisfies customers' one-stop purchases. Have extensive and friendly cooperation with domestic and foreign companies. Shandong Zhengde Metal Products Co., Ltd. has specialized in the production and sales of various steel products for 20 years. The testing equipment is complete, the technical force is strong, the product variety is complete, the quality is high-quality Our main markets are located in North America, South America, Africa, Southeast Asia, Europe and Oceania. We strictly check the quality, and we treat every customer and friend of ours in line with the principles of "integrity", "high quality", "win-win" and "long-term cooperation"

API
API is the English abbreviation of American Petroleum Institute. The grade indicates: the first two digits of the minimum value of the American unit yield strength. Take X80 as an example: X80 is the minimum yield strength of pipeline steel pipe 80000psi (552MPa) PSI English full name is Pounds per square inch. P is pound, S is square, and I is inch. It can be calculated by changing all the units into metric units: 1psi=6.895kPa=0.06895bar European countries and other countries are accustomed to using psi as the unit 1bar=0.1MPaM--thermomechanical controlled rolling (TMCP controlled rolling and controlled cooling) N--normalizing Q--Quenching and tempering (quenching + high temperature tempering) X42NB/X60QS/X65MS/X65MO.

Performance requirements
API pipe requirements (uniformity and stability of performance, dimensional accuracy, plate shape hardening, Bauschinger effect) to withstand large static and dynamic loads, to withstand the impact of oil flow erosion and corrosion, ambient temperature, and geological conditions on steel properties. Installation Welding quality. High plasticity and toughness, low ductile-brittle transition temperature, good welding performance, excellent resistance to hydrogen-induced cracking and sulfide stress corrosion cracking.

Attention to detail
There shall be no cracks, scars, folds, air bubbles, inclusions and delaminations on the surface that are harmful to use. The surface of the steel strip is allowed to have pits, concaves, scratches and other local defects whose depth or height does not exceed half of the thickness tolerance. And the minimum thickness allowed by the steel strip should be guaranteed. The depth of edge cracks and other defects in the width direction shall not exceed half of the allowable width deviation and the minimum width of the steel strip shall be guaranteed. The surface of pipeline steel shall not have defects such as scratches and scratches that may cause cracks in ultrasonic testing.

Applicable scene
Execution standards of seamless steel pipes for oil and gas pipelines: API 5L: GR.B (L245), X42 (L290), X46 (L320), X52 (L360), X56 (L390), X60 (L415), X65 (L450), X70(L485). Main application: used to make oil and natural gas pipelines. API 5L generally refers to the pipeline steel plate - API 5L pipeline steel plate, the pipeline steel plate is processed into a large-diameter pipeline steel pipe to transport the oil, steam and water extracted from the ground to the oil and gas industry enterprises through the pipeline pipe. The application range of API 5L pipeline steel is gradually expanding, especially the advantages of API 5L large-diameter pipeline steel are more obvious, coupled with the cost factor, API 5L seamless steel pipe has occupied a dominant position in the field of pipeline steel.

Provide on-site video or SGS inspection before loading,in order to ensure the quality and quantity of products and make customers rest assured.This is also the tradition and characteristic of our factory;

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Shandong Zhengde Metal Manufacturing Co., Ltd. is a production and sales company integrating hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, steel wires, metal mesh, stainless steel, aluminum, copper and other metal products integrated large enterprises. Five production and sales bases have been formed in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan and Tai'an, with more than 100 production lines, 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Products are exported to more than 50 countries and regions such as North America, South America, Europe, Africa, Oceania, Middle East, and Southeast Asia.