The main business is DIN-2391 standard hydraulic
seamless steel pipe (GB3639-83), which has been tested and confirmed by the national authority, and all indicators of the steel pipe fully meet the technical standards of German, Japanese, and American seamless steel pipes. Its salient features are: no oxide layer on the inner and outer walls of the steel pipe, high pressure, no leakage, high precision, high finish, no deformation in cold bending, flaring, flattening without cracks, surface anti-rust treatment, and its mechanical process performance is excellent.
A brief introduction is as follows: DIN high-precision black phosphating precision hydraulic steel pipe
Process introduction: The finished pipe of DIN high-precision precision-drawn bright seamless steel pipe is used as the steel pipe for phosphating, and the inner and outer walls of the steel pipe are phosphate with the imported environmentally friendly phosphating solution to form a black phosphating protective film. The micropores absorb anti-rust oil for anti-rust treatment, and the two ends are sealed for dust-proof treatment. the
Main features: Steel pipe color: black with a light, the surface color of the steel pipe has high uniformity, strong consistency, beautiful appearance, and good antirust performance of the steel pipe.
Main material composition: 10# (st35), 20# (st45), 35# (st55), 45# (st45), 16Mn (st52), etc.
DIN2391-81 standard positive and negative tolerance of outer diameter is 0.08-0.10; positive and negative tolerance of inner diameter is 0.10-0.15
The positive and negative tolerance of wall thickness is 0.10-0.15.
Fine-rolled seamless steel pipe: the most minor specification is 4MM--63MM, and the wall thickness is also 0.5-6.0 (other unique specifications, non-standard specifications, and particular specifications need to be negotiated). The standard length is 6 meters long (other delivery lengths need to be dealt with)
Precision-rolled seamless steel pipe Uses: for hydraulic systems, plastic machinery, injection molding machinery, and rubber machinery. Forging machinery, die-casting machinery, engineering machinery, automobile industry, shipbuilding industry, metal processing, military industry, diesel engine, internal combustion engine, air compressor, construction machinery, agricultural and forestry machinery, automation machinery, petrochemical industry, aerospace, hydraulic pneumatic, air conditioning, shoemaking Various industries such as machinery, as well as hardware factories and plastic hardware factories with high precision requirements.
