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API 620 low-pressure oil storage tanks reinforcing plates

API 620 low-pressure oil storage tanks reinforcing plates

API 620 low-pressure oil storage tanks reinforcing plates

Thickness as it Affects Preheat and Post-heat Requirements
Plate with thicknesses below 1/2 in. is reasonably notch tough. In most steels, when the API 620 low-pressure oil storage tanks used plate thickness exceeds 3/4 in. – 1 in., notch toughness, particularly as welded, decreases sharply. The decrease in notch toughness can be minimized by the conventional post-heat treatment and, in many steels, by preheat treatment. The benefits of preheat treatment in steels 3/4 in. – 1 in. thick have been demonstrated; similar benefits could be expected in thicker steels, but sufficient experimental data are currently lacking.

API 650 internal floating roof tanks are generally called internal floating roof tanks, floating roof tanks, internal floating disk storage tanks, internal floating disk tanks, etc., specifically referring to API 650 storage tanks and oil tanks with aluminum, stainless steel, etc. The API 620 low-pressure oil storage tanks inner floating roof of series material is an environmentally friendly and economical storage tank that prevents liquid from volatilizing.

API 620 low-pressure oil storage tanks weld tightness test: remove dirt from the API 620 low-pressure oil storage tanks weld, apply white powder emulsion, spray kerosene on the other side of the weld after drying. Because of the strong penetration of kerosene, if kerosene is sprayed after 12 hours (under low temperature conditions, the time can be extended), if the surface of the welded seam coated with white emulsion has no spots, the welded seam meets the requirements.

We should help solve the customer's problems in time, not just verbally, without solving the problems or shirking the responsibility. Improving after-sales efficiency can make customers feel respect. We should take their problems seriously and show sincerity. It can also give customers a good impression and reduce the negative impact.

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