Requirements for stainless steel tubes for mechanical equipment

Stainless steel pipe product description: Zhishang steel pipe is mainly engaged in European standard (German standard) DIN-2391 as the standard of hydraulic seamless steel pipe (national standard GB3639-83), is tested by national institutions, the indicators of the steel pipe fully meet the technical standards of Germany, Japan and the United States seamless steel pipe. Its remarkable characteristics are: no oxide layer on the inner and outer walls of the steel pipe, withstand high pressure, no leakage, high precision, high finish, cold bending without deformation, flaring, flattening without cracks, surface rust prevention treatment, and its mechanical process performance is good. The introduction is as follows: DIN high precision black phosphating precision hydraulic steel pipe

Process description: The finished pipe of DIN high-precision bright seamless steel pipe is used as a stainless steel seamless pipe for phosphating, and the internal and external walls of the seamless steel pipe are phosphating with imported environmentally friendly phosphating liquid to form a black phosphating protective film, which absorbs anti-rust oil through the micro-holes in the phosphating film for anti-rust treatment, and the two ends are sealed for dust treatment.

Main features: steel pipe color: black with bright, steel pipe surface color uniformity is high, consistency is strong, appearance is more beautiful, steel pipe rust resistance is good.

Main material ingredients: 10 # (st35), 20 # (st45), 35 # (st55), 45 # (st45), 16 mn (st52), etc.

DIN2391-81 standard outer diameter plus and minus tolerance is 0.08-0.10 Inner diameter plus and minus tolerance is 0.10-0.15 Wall thickness plus and minus tolerance is 0.10-0.15.

The main specifications are small 4MM- 63MM, and the wall thickness is also 0.5-6.0(other special regulations, non-standard specifications, special specifications need to be discussed). The standard length is 6 meters.

Main applications: hydraulic system, plastic machinery, injection molding machinery. 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, agriculture and forestry machinery, automation machinery, petrochemical industry, aerospace, hydraulic and pneumatic, air conditioning, shoemaking machinery and other industries and hardware factory. Plastic hardware factory with high precision requirements