Shanghai Songjiang Damper Group Nantong Co., Ltd. will introduce to you: the soft joint of stainless steel flange rubber is sent to Jiaozhou Waterworks, and on June 5, 2018, the soft joint of stainless steel flange rubber is sent to a water works in Jiaozhou, which is made of stainless steel.
The stainless steel flange purchased by Songjiang Group is guaranteed to be 304, because we have a professional testing instrument [spectrometer] to test the raw materials purchased.
At the end of the pre-Sinian period, Jiaozhou was affected by the Luliang movement, the ground rose and volcanic rocks were active. Since then, it has been stable. Therefore, since the Cambrian period, it has always been above the sea level and has been subjected to weathering and denudation for a long time. Until the end of the Mesozoic Jurassic period, it was affected by the Yanshan movement, and a large number of clastic rocks were deposited in the area.