久久综合精品国产二区小说|久久久91精品国产一区二区精品|欧美精品久久久久久久久25p|久久精品国产亚洲麻豆|亚洲中文精品高清|四虎免费成人|国产免费爽爽视频在线观看|五月婷婷六月综合

Recommended products

More

Elegant demeanour

More
  HOME >> Career with Sanda  
Sanitary Pipe Chemical Pickled & Passivation Procedure
1 Basis of scheme compilation .......................................... 
2 Working scope ............................................................ 
3 Cleaning process ......................................................... 
4 Cleaning process .......................................................... 
5 Waste liquor treatment ................................................. 
6 Condition supplied by the owner ...................................
7 Temporary tubing ........................................................
8 Test and accept ...........................................................
9 Security ......................................................................
Pipelines should be inspected in the overall perspective before cleaning and make sure that equipment material is in conformity with that listed in the scheme.