National Key New Product: DIN/EN Series High Precision
Seamless Steel Pipe (Special for High Speed Rail)
China's first green steel product manufacturing enterprise
The first Chinese steel pipe industry to receive certification
from the leadership of the General Administration of Quality
Supervision, Inspection and Quarantine
The first batch of Chinese enterprises awarded the export green
channel by the General Administration of Quality Supervision,
Inspection and Quarantine
The manufacturer with the most complete certification in China's
precision steel pipe industry
The first batch of first-class export enterprises in Shanghai
Shanghai Quality Management Award
品质合格是尽社会的义务,品质卓越是对社会的贡献
在装配硬管的过程中,应按规定弯曲半径使管路弯曲,否则会使管路产生不同的弯曲内应力,在油压的作用下逐渐产生渗漏。硬管弯曲半径过小,就会导致管路外侧管壁变薄, 内侧管壁存在皱纹,使管路在弯曲处存在很大的内应力,强度大大减弱,在强烈振动或高压冲击时,管路就易产生横向裂纹而漏油;如果硬管弯曲部位出现较大的椭圆度,当管内油压脉动时就易产生纵向裂纹而漏油。