Jiangyin Zhengbang Tube-making Co., Ltd.( http://www.zbsteeltube.com)
Norm DIN2391 EN10305,High quality carbon steel St35,St37.4,St52,cold drawing,bright heattreatmentwithoutoxidization(NBKstatus),non-destructivetesting,cleaing,phosphating,anti-rust oil dipping.This precision seamless tube with high accuracy and brightness features.
Mechanical properties:These tubes can be bent at any angel and bear the impact of high pressure,cold bending,flaring,and tensile force without cracks and breaks,oxidized residual substances on either inner or outer surface of tubes.Additionally,blockage to pneumatic,hydraulic and oil routes shall never occur.the elongation rate and tensile strength are in high standard.
our products used in industries of engineering machinery,machine tools,hydraulic machinery,shipbuilding ,automobile,heavy duty automobile,special automobile,railway locomotive,heavy duty machine,compressor,diesel engine,die casting machine,compressor,power station and boiler equipment etc
产品的制造标准采用DIN2391 EN10305标准系列。采用优质碳钢St35 St37.4 St52，精拔工艺、酸洗、磷化、无氧化光亮（NBK）热处理、无损探伤检测、浸油防锈处理后能满足高精度，高光洁度钢管的特殊要求。其机械性能适合在任一角度下弯曲，且可承受高压、冷弯、扩口、压扁、抗拉要求，做到不爆裂、无裂纹，且钢管内外壁无氧化皮，对气动、液压、油路无任何堵塞现象，钢管的延伸率及强度均十分理想。
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