API standard 650 mixed material tanks lining

The welded API 650 tank in various sizes and capacities for internal pressures approximating atmospheric pressure (internal pressures not exceeding the weight of the roof plates), but a higher internal pressure API standard 650 mixed material tanks is permitted when additional requirements are met.

Our company will accept the product quality objection registration record, pass it to the API standard 650 mixed material tanks production unit and relevant departments, and timely coordinate the supervision of product API standard 650 mixed material tanks quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.

All welded seams in the API standard 650 mixed material tanks bottom, and complete penetration and complete fusion sidewall-to-bottom welds, shall be inspected by means of a vacuum box test as described in Q.8.2.1. Sidewall-to-bottom welds not having complete penetration and complete fusion shall be inspected by means of either a vacuum box test of the inside weld as described in API 620 specification Q.8.2.1, or where approved by the Purchaser, a direct pressure solution film test as described in Q.8.2.2.

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