ASTM A216 grade WCB external floating roofs API 650 aluminum tanks

The finned tube heating device for high temperature heat transfer oil for large API 650 aluminum tanks has the advantages of convenient inspection and maintenance. The high-efficiency fin heating coil assembly is composed of spirally arranged finned coils. The fins are mainly arranged in the straight pipe section, and the whole assembly is supported by several angle steel supports. The high-efficiency fin heating coil component can enter and exit from the manhole of the API 650 aluminum tanks, which is convenient for maintenance and repair.

Service Conditions and Hydrogen-induced Cracking
When the service conditions might include the presence of hydrogen sulfide or other conditions that may promote hydrogen-induced cracking effects, particularly near the bottom of the API 650 aluminum tanks shell at the shell-to-bottom connections, care shall be taken to ensure that the materials and details of construction of the tank are adequate to resist hydrogen- induced cracking. The Purchaser shall consider restricting the sulphur content of the material to be stored through thickness testing of the steel, laboratory surveillance tests, and the use of internal tank coatings to reduce the possibility of hydrogen-induced cracking.

Floating roofs shall comply with API standard 650, Appendix C (Attachment 01) or with the API 650 aluminum tanks requirements as layed (laid )down in the national Chinese specifications SH3046-92 and GBJ128-90.