Api 650 flange dimensions pdf

The most basic difference between api 620 and api 650 standards are. Api 650 only addresses toughness of bottom plates welded to the shell, per section 2. G mm wn blind sow sw nominal size class 150 flanges to asme b16. Blind flange 27 lap joint flange 3 orifice flange 7 slipon flange 25 ring spacer spade flange 11 socket weld flange 5 threaded flange 5 weld neck flange 74 anchor flange 3 plate flange 12 ring flange 3 other flange 4 services. The api 12d specification is utilized in the fabrication and erection of field welded tanks for storage of production liquids.

Thickness of shell manhole cover plate and bolting flange. Nominal size and bore of flange hub and bore dimensions hub length threaded linepipe flange hub length threaded casing flange hub length welding neck linepipe flange neck diameter welding neck linepipe flange tolerance maximum bore of welding neck flange l1 l2 l3 l40. Dimensions weight kg dn nps flange od a mm length thru hub bolt drilling flange thickness d mm bore sow sw b mm raised face diam. Flange weld neck dimensions flange weights, api spec 6a flanges flange weights, api spec 17d flanges. For ring gasket number and pcd of ring groove see below. General this standard establishes minimum requirements for material, design, fabrication, erection, and inspection for vertical, cylindrical, aboveground, closed and opentop, welded storage tanks 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 is.

It covers forged steel flanges, sizes nps 12 dn 15 through nps 24 dn 600. One reason for this is that the api 650 standard was created and is revised by api committees comprised of the worlds best tank structural engineers who also rely on the experience of tank owners and tank construction companies. Advance tank has extensive experience with api 650 tanks ranging in diameter from 8 300 for refineries, terminals, pipeline facilities and other clients. Choosing between api 620 and 650 for your storage tank. For hcl environment up to 36% volume specify corrosion barrier and encapsulated weights.

This practice covers storage tanks that have design internal pressures of 17. For d1 dimensions see document flange facing according to din en 10921. Flange plate thickness for shell manholes and cleanout fittings. It can contain higher internal pressure such as lng. Skip to content 1085 south metcalf street lima, ohio 45804 phone. Api std 650 standard for welded tanks for oil storage. This standard covers the size range of dn 650 nps 26 to dn 1500 nps 60. Atmospheric storage tank specification supplement to api. Ansi, mss and api standards govern flange dimensions and tolerances. Jis5k standard flange for api 650 manholes api american.

Annex l normative api standard 650 storage tank data sheet. Api 6a6b6bx flange standard, class 2000psi, 3000psi, 5000psi, 0psi, 20000psi,data sheet including od, id, thickness, neck dimensions, bolt holes etc. Api 620 allows the storage of liquids of low temperatures but high pressure. Api 650 allows the storage of liquids of high temperatures but low pressure. If the tank must be designed for 50 mm water vacuum, then this is a special design which is. Class 150300 series a large diameter flange dimensions. Below are typical api 650 tank sizes and specifications to help our customers determine their exact needs. Api 650, annex f and design temperatures less than 260c 500f see.

The standard has gained international recognition and is the standard of choice of most builders of large liquid above ground storage tanks. Carbon steel flanges mechanical properties and chemistry conform to astm a105. Api is committed to maintaining the highest level of confidence in its certification andor licensing activities by providing impartial and objective assessments of its clients management systems. Roof manholes should not present any sealing problems since they see no pressure or media. Spacer and blank dimensions conform to api 590, except thickness t. Class 400 series a dimensions at nps 38 and larger also apply to class 400 series b flanges. Supplementary specification to api standard 660 shell and. Does api 650 cover the design of a tank for a design vacuum condition of 50 mm of water. Cathodic protection of aboveground petroleum storage tanks apirp 652.

The number and diameter mm of the bolt holes for the example below of 300nb is. Larger sizes, as well as intermediate sizes, can be furnished. For ring gasket ring groove dimensions see page 25 to 29 of our oilfield catalogue. Cathodic protection of aboveground petroleum storage tanks api rp 652. This usually applies to tank size larger than 300 ft. Flanged gate valve slide rule program flange makeup, standoff and drift pressure cut well head flange. Typical api 650 tank sizes international tank service.

Weld neck, integral, blinds, targets and test blinds pressure ratings integral, blind, target blind and test flanges. Ff 1 en10921 pn10 ff 2 api 650 ff 3 ul 142 ff table e flange type api 650 flange available in 20 and 24 sizes only. Api 650 specifies that long fiber sheet gaskets be used. Technical inquiries for api standard 650, welded tanks for. Refer to our flange chart online slide rule above for flange dimensions. Dimensions in mm above dn 600 dimension c1 is to be specified by the purchaser. Pn 6 flanges din en 10921 dimensions of pn 6 flanges. Api 650 sets minimum requirements for the design, material, construction, and testing for aboveground, open and closedtop, cylindrical steel storage tanks in different capacities and sizes, roughly equating to the pressure of the atmosphere not greater than the weight of the roof plates. Prochem piping products flanges a flange is designed to connect sections of pipe or tube, or to join the pipe or tube to an assembly such. Flange facing the profile of the connecting end of a flange. Flanges are furnished faced, drilled and spot faced or back faced. This commitment is supported by processes that manage conflicts of interest, ensure personnel competence, maintain confidentiality of information while promoting openness, and enable communication. Api 650 is widely used for tanks that are designed to internal pressures of 2.

Annex n provides requirements for the use of new or unused plate and pipe materials that are not completely identified as complying with any listed specification. Consult your local sales representative for further details. Shell manholes see head pressure from the liquid media inside the vessel. The 20 and 24 standard roof manholes use 16 and 20, 58 bolts respectively. Api6a 6b flanges threaded flange weld neck flange blind flange for ring gasket number and pcd of ring groove see below.

Flange edge the reference plane, coincident with the front of a flange, from which the height of any type of flange facing and also the minimum flange thickness is measured. Supplementary specification to api standard 660 for shellandtube heat exchangers this specification is written as an overlay to api std 660, following the section structure of the parent standard, to assist in crossreferencing the requirements. It is beyond the flange edge, except for a flange of pn 20 class 150 or pn 50 class 300 having. Dimensions n1, n2 and n3 are measured at the intersection of the hub draft angle and the back face of the flange. All about api flanges, hubs and clamps, slide rules.