ASTM A216 grade WCC external floating roofs API 650 open-top tanks
The thickness of the API 650 open-top tanks annular bottom plates shall be in accordance with Table Q-4 (for steel or aluminum, as applicable). The thicknesses shown are minimums. The ring of annual plates shall have a circular outside circumference, but it may have a regular polygonal shape inside the tank shell with the number of sides equal to the number of annular plates. These pieces shall be butt-welded in accordance with Q.7.1.1, Item b. The plates of the first shell course shall be attached to the annular bottom plates by a weld as required by API 620 oil tank 5.9.5 except when a full-penetration weld is used or required (see Q.7.1.1). Butt-welds in annular plates shall be not closer than 12 in. from any vertical weld.
According to API standard 650, the stairs used for API 650 petroleum storage tanks or thermal insulation tanks should be double longitudinal beams supported by a minimum of ribs. If the gap between the API 650 open-top tanks tank shell and the stringer of the API 650 petroleum storage tank exceeds 200mm, handrails should be provided on both sides of the stairs. Unless otherwise specified, according to API 650 open-top tanks ASTM A123, the following accessories shall be hot-dip galvanized. The damaged zinc coating should be repaired with zinc alloy.
Myanmar 4800 tons ABS AH36 and ABS A shipbuilding plates. This is very good customer of us, and we have cooperated many times for shipbuilding plates API 650 open-top tanks . The most frequently ordered is shipbuilding plates, almost hundreds tons every 2 month, which are finally supplied to Myanmar’s navy. Just in last year, we have supplier more than 4800 tons shipbuilding plates for the customer continuously.
}To scientifically evaluate the remaining service life of the API 650 open-top tanks, it is necessary to know the thickness change and development trend of the storage tank sheet after long-term use, combined with the metal characteristics of the storage tank, the influence of various external conditions and the continuous change of the oil pressure in the API 650 open-top tanks, etc. factors to judge. Because the metal characteristics, corrosion defects, load and other numerical parameters of the API 650 open-top tanks are randomly changed, the value of the remaining service life of the storage tank will also be dynamic.
We are willing to cooperate sincerely with you with high-quality API 650 open-top tanks products and sincere service to expand the market and create brilliant! We will work hard to create a first-class steel company and provide you with faster and more considerate after-sales services! Moreover, our shipbuilding steel plates have been certified by the nine countries' classification societies including DNV, ABC, GL, LR, BV, CCS, RINA, NK, and KR. The quality assurance system has passed ISO9001-2000 standard certification.
