Pipes : Stainless Steel

10S 304L

Allowable Working Pressures

mmTemp °F
100150200250300350400450500550600625650675700725750775
15199811978819595181881678215430140861325812424119761152811369112041104510887107561063210501
2015747155951544414334132241216911107104529790943990878963883287088584848083778280
25165611640216244150791390712,169116801099010301992895569425928791569025892288118708
40112521114211031102399,4468,68779367,46769986,74364886398630962196129606059845916
5089298839875681227,4956,895629559225550535051505074500549374861480647504688
6580948012793673636,7986,25357095,3715033485446684606453744754413435743094254
8066126550648860195,5505,1094,6614,3854,1093,96438133764370936543606355835163475
10051165068501946544,2953,9513,6063,3923,1783,06829512909286828272785275127232689
150386138263785351632402,9852723256523992,31722272199216521372103208220552027
20032683240320629782,7442,5232,3032,1722,0341,9581,8901,861183418061779175817371717
25029232896286126612,4542,2542,0611,93718131,7511,6821,6621,6411,6131593157215511537
30026822661263424412,2542,0751,8891,7791,6681,6061,5511,524150314821462144814271413

Allowable working pressures tabulated above were calculated by the formula in para 304, 1.2 (a) of ASA B31.3-1966 code for pressure piping as follows:

T = Pd / 2 (SE + PY – P)

Longitudinally welded pipe weld joint factors are established in para 302.4.3 of ASA B31.3.1966. Longitudinally welded pipe to ASTM specification A358 Class 1 and to ASTM specification A312 with 100% radiography in accordance with para 336.4.2 (e)

40S 304L

Allowable Working Pressures

mmTemp °F
100150200250300350400450500550600625650675700725750775
15268622660726345244552255920,75318940178231670616,0991549915285150651485114637144651429314120
202190421698214841993918,39516,91915,44414,53413,62413,12712,63812,46612,2861211411935117971165911514
25204912029120091186501720215,82314,44413,58912,74112,27911,81711,65911,49311,32811162110311090010769
40151751503014886138101274111,72110,70010,0669,4399,0948,7568,6328,5158,3918267817080747977
5012783126651254111638107359873901884807,9497,6607,3777,2747,1707,0676964688868056722
65139821384413713127281174210797985992738694837780677956783977297619752974397350
8012141120241190711052101979377856380537550727470056908681267156612653664606384
100102941019010094937086467949726068266398617159365854577156885605554354745412
150819881228039746068816329577854405095491647304661459945304468441343644309
200721971437074657160605571508847854488432341644102404739923930388938403792
250654364816419595754955054461943444068392337783723367536203564352334823440
300612960746012557851504737432340683813367535373489344033923337330232613220

Allowable working pressures tabulated above were calculated by the formula in para 304, 1.2 (a) of ASA B31.3-1966 code for pressure piping as follows:

T = Pd / 2 (SE + PY – P)

Longitudinally welded pipe weld joint factors are established in para 302.4.3 of ASA B31.3.1966. Longitudinally welded pipe to ASTM specification A358 Class 1 and to ASTM specification A312 with 100% radiography in accordance with para 336.4.2 (e)

10S 316L

Allowable Working Pressures

mmTemp °F
100150200250300350400450500550600625650675700725750775
15199811998119981192771857416968153681472714086135411300312776125551232812100118791165211466
20157471574715747151961463713376121141161111107106801024510073989497159542936391919039
25165611656116561159821539614065127411221011680112241077710590104041021810032984696599501
4011252112521125210852104599556865382947936762573227191706769436812668865646453
50892989298929861182947584686765776295605358055709560555095405530952055123
65809480948094780575226874622659645709548852675178508149924902481247234640
80661266126612637761435619508848744661448143024226415140824006393038543792
100511651165116493747574344393737713606346833303268321331583096304029852937
150386138613861372335923282297228472723262025102468242723852337229622542213
200326832683268315130402778251624132303221321232089205520201979194419101875
250292329232923282027162482224821512061197919031868183417991772173717031675
300268226822682259224962282206119791889182017441717168916551627159315651537

Longitudinally welded pipe to ASTM specification A312 has a weld joint factor of .80, i.e: pressures as tabulated above multiplied by .80.

T = Pd / 2 (SE + PY – P)

Conforming with requirements of 327.4.3, have a weld joint factor of 1.00, i.e: pressures as tabulated above. Longitudinally welded pipe to ASTM specification. A358 Class ll has a weld joint factor of .85, i.e: pressures tabulated above multiplied by .85.

40S 316L

Allowable Working Pressures

mmTemp °F
100150200250300350400450500550600625650675700725750775
15268622686226862259172497322814206631980118940182091747817175168781657516271159751567215410
20219042190421904211322036018609168511614715444148511425114010137621351413272130241277612569
25204912049120491197671904317402157611510614444138861332713100128721263812410121831194811755
401517515175151751463714106128861167311190107001028798739701953593639191902588538708
50127831278312783123351188610859983294259018866783228177803278877743760574607336
6513982139821398213486129961187310756103079859948090948942878486258467831581568018
80121411214112141117141128710314934289498563823279017763762574887357721970816964
100102941029410294992895708742791575847260697766956584646763506233612260055902
1501302481988198790876196964630960405778555753365240515050614964487447854702
200721972197219696467086129555053165088488846954612453044544371428842064137
250654365436543631560885557503348264619444042614185410940403964389538203758
300612961296129591656955205471645164323415739923923385437853716364735783516

Longitudinally welded pipe to ASTM specification A312 has a weld joint factor of .80, i.e: pressures as tabulated above multiplied by .80.

T = Pd / 2 (SE + PY – P)

Conforming with requirements of 327.4.3, have a weld joint factor of 1.00, i.e: pressures as tabulated above. Longitudinally welded pipe to ASTM specification. A358 Class ll has a weld joint factor of .85, i.e: pressures tabulated above multiplied by .85.

Structural Tube

Sectional Properties

The sectional properties in the tables are based on the specified outside dimensions and wall thickness. For square and rectangular sections the corner radii used in the calculations are R Internal = 1,5t where t is the wall thickness.

The masses per unit length are calculated on the basis that steel has a density of 7,85 x 10³ kg/mm³

Torsional constants for most of the sections are available on request.

Steel Qualities

SABS 657 Tubes shall be of steel of chemical composition that complies with the following:

  • Carbon content at 0,25% maximum.
  • Sulphur and Phosphorus at 0,05% each, maximum

Materials:

Steel generally used for are Fe37B, C and D….. From ISO/R 630. Other steels from this or other specifications can also be supplied by agreement.

Dimensions:

As per the sizes listed in the sectional properties tables. These are largely in accordance with ISO/DIS 4019 and other sizes can be supplied by agreement. The sizes listed are metric and we will be adopting these sizes as std.

Tolerances:

Outside Dimensions ± 1% with a minimum of ± 0,5mm
Wall Thickness ± 10% with a minimum of ± 0,2mm outside the weld area.
Straightness 0,2% of total length.

Other and closer tolerances can be supplied on request or by agreement.

Wall Thickness

The standard wall thickness available in the Republic of South Africa are:
1,6 | 2,0 | 2,2 | 2,5 | 2,8 | 3,0 | 3,5 | 4,0 | 4,5 | 5,0 | 6,0 mm