Product Details  As per DIN2391 DIN2391 DIN1630 DIN10305 EN10305 SAEJ179 standard,the products are high precision and fine finish tubes.  1) Application: widely used in automobile, refrigeration, machinery industry, hydraulic equipments 2) advantage: excellent mechanical properties,precise in tolerance, BK or NBK status 3) standard: DIN2391 DIN1630 DIN10305 EN10305 4) Steel Grade :st35,st37,st45,st52 , or as per customer's requirement 5) Specifications: a) OD: 4mm-38mm b) Thickness: 0.3-6.0mm for example: 6mm*2mm, 6mm*2.2mm, 6mm*2.4mm, 7mm*3mm  Mechanical properties:These tubes can be bent at any angel and bear the impact of high pressure,cold bending,flaring,flating,and tensile fore without cracks and breaks,oxidized residual substances on either inner or outer surfurce of tubes .Additionally,blockage to penumatic, hydraulic and oil routes shall never occur .The elongation rate and tensile strength are in high standard.