CSA G40.21 Gr 44W plates API standard 650 storage tank

For the welding of API standard 650 storage tank bottom, attention should be paid to the slag removal and drying of the welding joint before welding, and there is no sediment and oil contamination in the lap joint of steel plate. The manufacturing quality and production efficiency of the central plate can be obviously improved by adopting the rolling central plate. The butt joint is used between the rolling plates to improve the installation conditions of the central plate at the bottom of the API standard 650 storage tank. The welding sequence of the central plate is from the center of the central plate to the surrounding.

Temporary Openings after Hydrostatic Test
When approved by the Purchaser in writing, and only in the case of tanks which when complete have no shell penetrations, it is permitted to restore by welding up to four temporary shell openings after the hydrostatic test in accordance with the provisions of this section. Each temporary opening shall be restored by the insertion of a shell plate that matches the thickness and specification of adjacent shell material, and is welded into place with full fusion butt-welds. The API standard 650 storage tank insert plate shall be round with diameter no less than 24 in. and no greater than 42 in.

The vent pipe mouth should be 4m or more above the ground. The nominal diameter of the API standard 650 storage tank API 650 petroleum storage tank vent pipe should be no less than 50mm and a flame arrestor should be installed.

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Hot rolled plates are known for their superior mechanical properties over commodity grades of merchant bar. The hot rolled API standard 650 storage tank plates products are made to specific chemistry and mechanical properties ranges, allowing them to be used in engineered applications. Resulting shafts, axles, and gears can be used in the automotive API standard 650 storage tank industry and agriculture equipment. A36 mild steel has good strength, formability, and excellent welding properties. We also can supply welding, fabricating, and bending service.