Xuzhou Global Precision Steel Tube Co..Ltd develops and produces the high quality seamless steel tubes. As the largest precision seamless hydraulic steel tube manufacturer in China, confirming to DIN2391/C, EN10305 and SAE J524 standard. We develops customized tubes solutions for Automotive, engineering machinery, railway locomotive, ships and hydraulic systems, etc. We focus on R & D and keep improving the quality of our tube, selects the high quality steel billet,and when the production of manufacturing, every process is strictly controlled and tested to insure quality. Our products benefit...

180,000 Square meters Factory area Annual output of precision steel tubes Global Customers Production Quality Standards

Rich cultural life, relaxed and harmonious working environment , these are more effective to arouse the staffs working enthusiasm. We will keep on contributing our efforts to the development of our company.

We choose the high quality steel billets,which have good chemical composition and mechanical properties. Including elongation, tensile strength , high pressure resistance should meet the requirements. To ensure the high quality, all finished tubes are confirmed to DIN2391/C and EN10305 cold drawn/ cold rolled precision seamless steel tubes for hydraulic and pneumatic lines.

Precision Steel Tube Raw material chemical analysis, physical performance, sizes Cold drawn cold rolled

Heat treatment: Surface treatment: Straightness: Dimensional tolerance: NBK (+N) normalized Bright as cold drawn 10pm/ meter according to EN10305-4 Feature • No oxide layer on both sides of tube; • High pressure, no leakage; • High precision, smooth surface; • Cold bending without deformation; • No crack during flaring and flattening; • Anti-rust on inside and outside

Precision Steel Tube Packaging: Two ends sealed with plastic caps, bundling with plastic film and woven bag package. Each bundle max lOOOkgs Length: Fixed 6m or as customer's requirement These tubes are widely used for hydraulic cylinder, diesel, hydraulic pump station and hydraulic system which areas require the steel tubes in high precision and cleanliness.

Technical characteristics Standard: DIN2391/C ( EN10305-1 ),EN 10305-4 ( DIN2445 ), SAE J524 Heat treatment: Surface treatment: Straightness: Dimensional tolerance: Phosphated-internal and external phosphated coating 10ym / meter according to EN 10305-4 • The phosphated coating is delicate, high lubricity, uniform color. • Good looking in appearance • High anti corrosion 8 anti rust. • Suitable for painting, and have strong adhesion

They are applied in engineering machinery .ships .precision machinery .hydraulic and pneumatic system .The surface of phosphating precision steel tube is especially suitable for painting or spray treatment. The paint surface has strong adhesion, the effect is excellent and beautiful, and the rust prevention effect is greatly enhanced.

Technical characteristics Standard: Heat treatment: Surface treatment: E255 (ST45), E355 (ST52) NBK (+N) normalized galvanized-these tubes with a zinc coating of 8 to 12pm and subsequently chrome VI-free passivated (white and color galvanized); • Cold galvanized ( electrogalvanizing ) in bright steel tube; • Improve corrosion resistance in surface; • It will be strong anti corrosion & rust when passivated in zinc coating; • Color: white,yellow or colorful; • No zinc coating drops when bending;

Precision Steel Tube Application They are applied in all kinds of vehicles, engineering machinery chassis, hydraulic piping system which require the tubes in good looking and high corrosion resistance.

Technical characteristics Standard: Heat treatment: Surface treatment: Straightness: Dimensional tolerance: E235 (ST35n ST37.4), E255 (ST45), E355 (ST52) NBK (+N) normalized army green passivated 10pm/ meter according to EN 10305-1 • High precision, smooth surface; • Strong anti rust/corrosion property; • No any corrosion after 220 hours' Salt spray test;

Precision Steel Tube They are widely used in heavy duty truck, military industry, railway locomotive, engine filed and the gas road in special vehicle. They can meet the requirements because of high precision in inside and outside and corrosion resistance.

Tube assembly is made up of steel tube, cutting sleeve and nut. It is a commonly device in hydraulic system to connect various hydraulic components and transfer hydraulic oil and gas. Specification• Cutting sleeves and nuts are imported from Germany- JS brand • Maximum bending capacity: <I>60'5 • High cleanliness in inside • Surface treatment: galvanized, phosphated • High pressure resistance, no leakage at connection points,easy to assemble and high efficiency

Tube Assembly—welding typeSpecification ■ TIG welding -mainly used for piping with high working pressure. The advantages are reflected in single side welding and both sides forming , high pressure resistance and high reliability. • C02 shielded arc welding-mainly used for piping with lower pressure. The advantages are easy operation, high efficiency and lower cost. Welding line is uniform, high pressure resistance, durable and no leakage galvanized, phopshated, spray paint and spray plastic

Endoscope: inspect the cleanliness of inner wall Hydraulic universal testing machine: test the mechanical properties: tensile strength .yield strength,elongation Eddy current Inspection: inspect the surface of steel tubes for defects

Precision Steel Tube 1. ISO 9001: 2015 for the Quality Management System 2.1ATF16949:2016 required by the automotive customers for the quality management system is currently under development 3. SGS--The Third Party testing for mechanical properties according to customer request 4. SGS--The Third Party testing for salt spray test according to customer request In addition we guarantee: Strict compliance with EN10305 standard including raw material, production, quality control, and after sale service; Same level of environment standard required in EU.