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3M Construction Assembling & Trading Co., Ltd


  • Tiếng Anh
  • Tiếng Việt
+84 903 815 852 - +84 225 3 564 259

Contact us 24/7

119/81 Nguyen Trai street, Ngo Quyen district, Hai Phong city, Vietnam

Our address

Documents and tips

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The installation must be done:

  • a mechanical resistance test at 1.5 times working pressure with a    minimum of 3 bars.
  • a leak test at working pressure.
  • a certificate.

The installation must be verified once a year, must be maintained upper and lower openings unobstructed.

These  openings  are  mandatory:  room  ventilation  and  air  supply  required  to  ensure  the proper combustion of heating appliances.

The customer must hold a consignment voucher issued by the retailer or the distributor on the purchase of one or more cylinders.

The  safety   precautions   to  be  complied   with   appear   on  the  back   of  this  voucher. The installation must be maintained in a good state of operation and must be performed an annual  inspection  with  issuance  of  a  receipt. This document  is  required  for  insurance purposes in the event of a claim.