technical information pressure - schwer · pdf file9 sealing seal materials, temperature...

8

Pressure

� Pressure

The actual permissible Nominal Pressure (PN) is given in the table for everyproduct. It is shown in bar and is based on the pressure for water under static load.

Under standard operating conditions (static) and temperature (20°C), the operating pressure (PB) and the given Nominal Pressure (PN) can be taken as the same (see DIN 2401, Part 1).

For increased temperatures, the operating pressure should be reduced according to the table below, and the the PN selected accordingly.

� Pressure Reduction Table

Temperature Range Pressure Reduction Temperature Range Pressure Reduction-60°C bis 20°C 0,0 % 250°C 24,0 %50°C 4,5 % 300°C 29,0 %100°C 11,0 % 350°C 31,0 %150°C 16,0 % 400°C 33,0 %200°C 20,0 %

It should be noted that DIN 17 440 Tab. 6 recommends a maximum temperature of 400°C for AISI 316Ti.

� Combinations of different fittings

For combinations of different fittings as well as different seal materials within a system, the lowest actual pressure and temperature range for a fitting determines that of the complete system.

� Correct Assembly

In order to achieve the stated pressures in this catalogue it is essential that the assembly is carried out correctly and professionally. Please follow theassembly instructions given. It is especially important to ensure that the fittings are not placed under load or stress.

Technical Information

020 GB-Hinweise_D 30.10.13 11:52 Seite 8

9

Sealing

� Seal Materials, Temperature Ranges

NBR (Acrylnitril-Butadien-Kautschuk, e.g. Perbunan)-30°C to 100°C

FKM (Fluor-Kautschuk, e.g. Viton)-20°C to 200°C

EPDM (Ethylen-Propylen-Dien-Kautschuk)-50°C to 150°C

PTFE (Polytetrafluorethylen)-200°C to 230°C

POM (Polyacetal, e.g. Delrin)-40°C to 80°C

Perbunan, Viton, PTFE and Delrin are all manufacturersregistered trade names.

Please note the advice in DIN 7716 (Products in Rubber andIndia Rubber: Requirements for storage, cleaning and service).

� Sealing of tapered threads on fittings

With PTFE TapeThe sealing qualities of a tapered thread (R thread to DIN 2999 and DIN 3858as well as NPT thread to ANSI/ASME B 1.20.1-1983) depend on the sealingmaterial used on the external thread.

We recommend 7-8 layers tightly wound on the thread, starting at the leading edge and covering the complete thread (this ensures that the tapedoes not unwind on assembly).

If the fitting has to be unscrewed for any reason, the tape MUST be renewed.

With Sealing PastesThe paste should be used on the 2nd and 3rd threads and then the fitting screwed in. The paste will spread itself evenly on the thread, thus making aseal on hardening. Unscrewing of the fitting will break the seal.


see page 13.1


10

Metric Thread� to DIN 13

Abbreviation: MDescription: M 12 x 1,5Type: Inside parallel Outside parallelUses: Regular or Fine,

for connections not sealing on the thread

� Description:This thread serves only as a mechanical connection of parts. A seal only results from the pressing together of2 sealing flats outside of the thread and through the use of a proprietary seal.Male studs (with sealing ring), Form B (with sealing edge) and Form E (on agreement) as well as the respective Form X tapped holes (with run out) and Form Y (with grooves), to DIN 3852 Part 1 have Mthreads to this standard.

Outside thread (Tol.-6): max. outside ø max. haunch øThread P Inside thread (Tol.-6H): h min. haunch ø min. core ø iM 5 0,8 0,433 4,976 4,480 4,134M 8 x 1,0 1,0 0,541 7,974 7,350 6,917 8M 10 x 1,0 1,0 0,541 9,974 9,350 8,917 8M 12 x 1,0 1,0 0,541 11,974 11,350 10,917M 12 x 1,5 1,5 0,812 11,968 11,026 10,376 12M 14 x 1,0 1,0 0,541 13,974 13,350 12,917M 14 x 1,5 1,5 0,812 13,968 13,026 12,376 12M 16 x 1,0 1,0 0,541 15,974 15,350 14,917M 16 x 1,5 1,5 0,812 15,968 15,026 14,376 12M 18 x 1,0 1,0 0,541 17,974 17,350 16,917M 18 x 1,5 1,5 0,812 17,968 17,026 16,376 12M 20 x 1,5 1,5 0,812 19,968 19,026 18,376 14M 22 x 1,5 1,5 0,812 21,968 21,026 20,376 14M 24 x 1,5 1,5 0,812 23,968 23,026 22,376 14M 26 x 1,5 1,5 0,812 25,968 25,026 24,376 16M 27 x 2,0 2,0 1,083 26,962 25,701 24,835 16M 30 x 2,0 2,0 1,083 29,962 28,701 27,835 16M 33 x 2,0 2,0 1,083 32,962 31,701 30,835 18M 36 x 2,0 2,0 1,083 35,962 34,701 33,835 18M 42 x 2,0 2,0 1,083 41,962 40,701 39,835 20M 45 x 2,0 2,0 1,083 44,962 43,701 42,835 20M 48 x 2,0 2,0 1,083 47,962 46,701 45,835M 52 x 2,0 2,0 1,083 51,962 50,701 49,835



11

Tapered metric outside� to DIN 158Abbreviation: M kegDescription: DIN 158 - M 30 x 2 kegType: Inside parallel Tapered Outside

(M thread to DIN 13) (taper 1:16)Uses: Tapered outside thread for pipe fittings,

sealing on the thread

� Description:Threads to this Standard are used for Pipe fittings with tapered male studs Form C, which are screwed intotapped holes Form Z, to DIN 3852 Part 1. The distance a conforms to DIN 3852 Part 1. The tapered outside thread of this Standard has the same outside diameter as that of the inside parallel threadin DIN 13, enabling it to be screwed in by hand. The fitting does not need to be tightened too firmly and theseal is made with the aid of a propritary sealing material (such as PTFE tape). All the diametres have the sametolerances and the middle values are shown in the table. The parallel inside thread should be to DIN 13, sothat the clearance between the points of the thread and thereby the likelyhood of leaks occurring, is minimised.

Outside thread P h Outside ø Haunch ø Core ø a iM 8 x 1,0 keg 1,0 0,613 8 7,350 6,773 2,5 8M 10 x 1,0 keg 1,0 0,613 10 9,350 8,773 2,5 8M 12 x 1,5 keg 1,5 0,920 12 11,026 10,160 3,5 12M 14 x 1,5 keg 1,5 0,920 14 13,026 12,160 3,5 12M 16 x 1,5 keg 1,5 0,920 16 15,026 14,160 3,5 12M 18 x 1,5 keg 1,5 0,920 18 17,026 16,160 3,5 12M 20 x 1,5 keg 1,5 0,920 20 19,026 18,160 3,5 12M 22 x 1,5 keg 1,5 0,920 22 21,026 20,160 3,5 14



12

BSP � to DIN/ISO 228

Abbreviation: GDescription: ISO 228-G 1/2" ISO 228-G 1/2" AType: parallel inside parallel outside

(tol. class A)Uses: pipe fittings,

not sealing on the thread

� Description:This thread is mainly used for mechanical connection of fittings. The seal results from the pressing together oftwo sealing faces outside the thread and from the use of a proprietary sealing material.

Male studs (with sealing ring), Form B (with sealing edge) and Form E (on agreement) as well as the respective Form X tapped holes (with run out) and Form Y (with grooves), to DIN 3852 Part 2 have G threadsto this standard.

max. outside ø min. core ø

Thread No of threads P h for OT Haunch ø for IG iG 1/8" 28 0,907 0,581 9,728 9,147 8,566 8G 1/4" 19 1,337 0,856 13,157 12,301 11,445 12G 3/8" 19 1,337 0,856 16,662 15,806 14,950 12G 1/2" 14 1,814 1,162 20,955 19,793 18,631 14G 5/8" 14 1,814 1,162 22,911 21,749 20,587G 3/4" 14 1,814 1,162 26,441 25,279 24,117 16G 1" 11 2,309 1,479 33,249 31,770 30,291 18G 1 1/8" 11 2,309 1,479 37,897 36,418 34,939G 1 1/4" 11 2,309 1,479 41,910 40,431 38,952 20G 1 1/2" 11 2,309 1,479 47,803 46,324 44,845 22G 1 3/4" 11 2,309 1,479 53,746 52,267 50,788G 2" 11 2,309 1,479 59,614 58,135 56,656 24G 2 1/4" 11 2,309 1,479 65,710 64,231 62,752G 2 1/2" 11 2,309 1,479 75,184 73,705 72,226G 2 3/4" 11 2,309 1,479 81,534 80,055 78,576G 3" 11 2,309 1,479 87,884 86,405 84,926G 3 1/2" 11 2,309 1,479 100,330 98,851 97,372G 4" 11 2,309 1,479 113,030 111,551 110,072G 4 1/2" 11 2,309 1,479 125,730 124,251 122,772G 5" 11 2,309 1,479 138,430 136,951 135,472G 5 1/2" 11 2,309 1,479 151,130 149,651 148,172G 6" 11 2,309 1,479 163,830 162,351 160,872



13

BSP � to DIN EN 10226

Abbreviation: Rp RDescription: DIN EN 10226-Rp-1/2 DIN EN 10226-R-1/2-1Type: Parallel inside Tapered outside

(taper 1:16)Uses: Pipe fittings, for threaded pipe and fittings, sealing

in the thread with sealing material

� Description:The tapered R outside thread has the same core, haunch and outside dia as the Rp inside thread, so that it canbe threaded in by hand. The torque from the spanner lengthens the tapped hole and seals with the aid of a proprietary sealing material (eg. PTFE tape)

Comparison with ISO 228: The parallel Rp inside thread of this Standard has the same nominal size for thethread dia and profile as for the inside thread to ISO 228. However, the G inside thread in core and haunch diahas only a positive deviation (from DIN 2999 +/- tolerance). Therefore a DIN 2999 tapered outside thread may bescrewed into an ISO 228 parallel inside thread. The outside thread can be screwed 1 turn further. The likelyhoodof leaks occurring is increased due to larger core dia tolerance of the G thread which gives a larger clearancebetween the points of the threads.

In no circumstances combine ISO 228 parallel G outside thread with DIN 2999 Rp parallel inside thread as theinside thread is too small.

Outside thread Inside thread No ofDN R Rp Pipe-OD threads P h outside ø haunch ø core ø a i6 R 1/8" Rp 1/8" 10,2 28 0,907 0,581 9,728 9,147 8,566 4,0 6,58 R 1/4" Rp 1/4" 13,5 19 1,337 0,856 13,157 12,301 11,445 6,0 9,710 R 3/8" Rp 3/8" 17,2 19 1,337 0,856 16,662 15,806 14,950 6,4 10,115 R 1/2" Rp 1/2" 21,3 14 1,814 1,162 20,955 19,793 18,631 8,2 13,220 R 3/4" Rp 3/4" 26,9 14 1,814 1,162 26,441 25,279 24,117 9,5 14,525 R 1" Rp 1" 33,7 11 2,309 1,479 33,249 31,770 30,291 10,4 16,832 R 1 1/4" Rp 1 1/4" 42,4 11 2,309 1,479 41,910 40,431 38,952 12,7 19,140 R 1 1/2" Rp 1 1/2" 48,3 11 2,309 1,479 47,803 46,324 44,845 12,7 19,150 R 2" Rp 2" 60,3 11 2,309 1,479 59,614 58,135 56,656 15,9 23,465 R 2 1/2" Rp 2 1/2" 76,1 11 2,309 1,479 75,184 73,705 72,226 17,5 26,780 R 3" Rp 3" 88,9 11 2,309 1,479 87,884 86,341 84,926 20,6 29,8100 R 4" Rp 4" 114,3 11 2,309 1,479 113,030 111,551 110,072 25,4 35,8125 R 5" Rp 5" 139,7 11 2,309 1,479 138,430 136,951 135,472 28,6 40,1150 R 6" Rp 6" 165,0 11 2,309 1,479 163,830 162,351 160,872 28,6 40,1



14

BSP � to DIN 3858

Abbreviation: Rp RDescription: DIN 3858-Rp-1/2 DIN 3858-R-1/2Type: Parallel inside Tapered outside

(taper 1:16)Uses: Pipe threads, for pipe fittings

sealing in the thread with sealing material

� Description:Threads to this standard are used for pipe fittings with tapered male studs, Form C, which are screwed intoparallel tapped holes, Form Z, to DIN 3852 Part 2.

Comparison with DIN 2999: The tapered outside thread and the parallel inside thread of this Standard have thesame nominal sizes for the thread dia and profile as for threads DIN 2999 Part 1. The tapered outside threadhas a shorter useable thread length i due to the smaller distance a. The parallel inside thread has only positivedeviation and this permits the tapered outside thread to be fully screwed in.

Comparison with ISO 228: The parallel inside thread of this Standard has the same thread profile as the parallelinside thread to ISO 228 but with an obvious smaller core dia tolerance which gives a smaller clearance betweenthe points of the threads and thus the likelyhood of leaks occurring is minimised.

outside inside R Rp no of threads P h outside ø haunch ø core ø a i

R 1/8" Rp 1/8" 28 0,907 0,581 9,728 9,147 8,566 3,0 5,5R 1/4" Rp 1/4" 19 1,337 0,856 13,157 12,301 11,445 4,5 8,2R 3/8" Rp 3/8" 19 1,337 0,856 16,662 15,806 14,950 4,5 8,2R 1/2" Rp 1/2" 14 1,814 1,162 20,955 19,793 18,631 5,0 10,0R 3/4" Rp 3/4" 14 1,814 1,162 26,441 25,279 24,117 6,0 11,0R 1" Rp 1" 11 2,309 1,479 33,249 31,770 30,291 7,0 13,4R 1 1/4" Rp 1 1/4" 11 2,309 1,479 41,910 40,431 38,952 7,5 13,9R 1 1/2" Rp 1 1/2" 11 2,309 1,479 47,803 46,324 44,845 7,5 13,9



15

American tapered thread � to ANSI/ASME B 1.20.1 - 1983

Abbreviation: NPTDescription: 3/8 - 18 NPTType: Tapered inside Tapered outside

(taper 1:16)Uses: Pipe threads, for pipe threads and fittings,

sealing in the thread with sealing material

� Description:The tapered NPT outside thread has the same core, haunch and outside dia as the NPT inside thread at thestart of the thread so that it can be screwed in by hand. The torque from the spanner lengthens the tapped holeand seals with the aid of a proprietary sealing material (eg PTFE tape). As both the inside and outside threadsare tapered, the likelyhood of leaks occurring is small.

Thread Pipe OD no of threads P h haunch ø E1 L1 i1/8" NPT 10,287 27 0,941 0,753 9,489 4,102 6,7031/4" NPT 13,761 18 1,411 1,129 12,487 5,786 10,2063/8" NPT 17,145 18 1,411 1,129 15,926 6,096 10,3581/2" NPT 21,336 14 1,814 1,451 19,772 8,128 13,5563/4" NPT 26,670 14 1,814 1,451 25,117 8,611 13,8611" NPT 33,401 11 1/2 2,209 1,767 31,461 10,160 17,343

1 1/4" NPT 42,164 11 1/2 2,209 1,767 40,218 10,668 17,9531 1/2" NPT 48,260 11 1/2 2,209 1,767 46,287 10,668 18,377



16

Screwed Plugs and Tapped Holes

� with metallic seal by sealing edge:

Measure.Table for the Screw Plug holes narrowDIN 3852 Part 1 Part 2 d3-0,2 d4+0,2 d7+0,2 max. a1 min. b1 min. t1

M 8 x 1,0 12 13,0 8,0 1,0 8,0 13,5M 10 x 1,0 G 1/8" 14 15,0 10,0 1,0 8,0 13,5M 12 x 1,5 17 18,0 12,0 1,5 12,0 18,5

G 1/4" 18 20,0 13,2 1,5 12,0 18,5M 14 x 1,5 19 20,0 14,0 1,5 12,0 18,5M 16 x 1,5 21 23,0 16,0 1,5 12,0 18,5

G 3/8" 22 23,0 16,7 2,0 12,0 18,5M 18 x 1,5 23 25,0 18,0 2,0 12,0 18,5M 20 x 1,5 25 27,0 20,0 2,0 14,0 20,5

G 1/2" 26 28,0 21,0 2,5 14,0 22,0M 22 x 1,5 27 28,0 22,0 2,5 14,0 20,5M 26 x 1,5 31 33,0 26,0 2,5 16,0 22,5M 27 x 2,0 G 3/4" 32 33,0 27,0 2,5 16,0 24,0M 33 x 2,0 G 1" 39 41,0 33,3 2,5 18,0 27,0M 42 x 2,0 G 1 1/4" 49 51,0 42,0 2,5 20,0 29,0M 48 x 2,0 G 1 1/2" 55 56,0 48,0 2,5 22,0 31,0

to DIN 3852 - Part 1:with parallel metric threadto DIN 13

Male screwed plugForm B

Tapped HolesForm Xfor screwed plugsForm B and C

to DIN 3852 - Part 2:with parallel BSP threadto ISO 228

metal sealing edge Captire seal



17


� with elastomer seal by captive seal:

Measure.Table or the Screw Plug holes narrowDIN 3852 Part 1 Part 2 d3-0,2 d4+0,2 d7+0,2 max. a1 min. b1 min. t1

M 8 x 1 12 13,0 8,0 1,0 8,0 13,5M 10 x 1,0 G 1/8" 14 15,0 10,0 1,0 8,0 13,5M 12 x 1,5 17 18,0 12,0 1,5 12,0 18,5

G 1/4" 18 20,0 13,2 1,5 12,0 18,5M 14 x 1,5 19 20,0 14,0 1,5 12,0 18,5M 16 x 1,5 21 23,0 16,0 1,5 12,0 18,5

G 3/8" 22 23,0 16,7 2,0 12,0 18,5M 18 x 1,5 23 25,0 18,0 2,0 12,0 18,5M 20 x 1,5 25 27,0 20,0 2,0 14,0 20,5

G 1/2" 26 28,0 21,0 2,5 14,0 22,0M 22 x 1,5 27 28,0 22,0 2,5 14,0 20,5M 26 x 1,5 31 33,0 26,0 2,5 16,0 22,5M 27 x 2,0 G 3/4" 32 33,0 27,0 2,5 16,0 24,0M 33 x 2,0 G 1" 39 41,0 33,3 2,5 18,0 27,0M 42 x 2,0 G 1 1/4" 49 51,0 42,0 2,5 20,0 29,0M 48 x 2,0 G 1 1/2" 55 56,0 48,0 2,5 22,0 31,0

to DIN 3852 - Part 1:with parallel metric threadto DIN 13

Male screwed plugwith captive seal

Tapped holesForm Xfor studs with captiveseal

to DIN 3852 - Part 2:with parallel BSP threadto ISO 228

metal sealing edge Captire seal



18


� with sealing material on the thread:

Measurement Table for the Screw Plug holesDIN 3852 Part 1 Part 2 NPT min. b2 min. t3

M 8 x 1,0 5,5 10,0Rp 1/8" 5,5 9,5

M 10 x 1,0 5,5 10,0M 12 x 1,0 Rp 1/4" 8,5 13,5M 14 x 1,5 8,5 13,5M 16 x 1,5 Rp 3/8" 8,5 13,5M 18 x 1,5 8,5 13,5M 20 x 1,5 Rp 1/2" 10,5 16,5M 22 x 1,5 10,5 16,5

1/8" NPT 6,9 11,61/4" NPT 10,0 16,43/8" NPT 10,3 17,41/2" NPT 13,6 22,63/4" NPT 14,1 23,11" NPT 16,8 27,8

1 1/4" NPT 17,3 28,31 1/2" NPT 17,3 28,3

to DIN 3852 - Part 1:with parallel metricthread to DIN 158

with parallel metricthread to DIN 13

Male screwedplugsForm C

Tapped holesForm Zonly for scr-ewed plugsForm C

to DIN 3852 - Part 2:with tapered BSP threadto DIN 3858

with parallel BSP threadto DIN 3858

Studs:

TappedHoles:

NPT:studs and tapped holeswith tapered NPT threadto ANSI / ASME B1.20.1-1983



19


Additional products

� Seal · bond · clean · secure · deburr · saw · mount

Please see chapter 13 (from page 13.01 on) “Additional products”.

NEW

Schwer Fittings offers a variety of assembly aids with the new product line “Additional products”.Please ask our staff in service and sales for further information.


20


�References on physical properties of some steels

Type

Density

Modulus of

Thermal

Thermal

Specific

Electrical

Magneti-

elasticity

expansion

capacity

Heat

Resistance

sability

at 20°C

between 20°C and

capacity

at 20°C

Material

100°C 400°C

at 20°C

Abbreviation

number

kg/dm3

kN/mm2

106 ·K-1

W/(m

·K)

J/(kg·K)

V·mm2 /m

X 5 CrNiMo 17 12 2

1.4401

7,98

200

16,5

18,5

15500

0,75

not available

X 6 CrNiMo Ti 17 12 2

1.4571

7,98

200

16,5

18,5

15500

0,75

not available

X 2 CrNi N 23 4

1.4362

7,75

200

13,0

14,5

16470

-available

Material

Schwer-fittings are the specialists in stainless steel fittings (1.4571 or AISI 316Ti). We are continually investing in the development and

improvem

ent of our products. We process wrought 1.4571 with a works acceptance certificate to DIN 50 049 3.1B.

Small sized nuts are cold pressed.

�Mechanical properties at room temperature

Type

0,2%

-Permanent

1%-Permanent

Tensile

Ductile yield

elongation limit

elongation limit strength

length

breadth

length

breadth

length and breadth

length

breadth

length

breadth

Material

N/mm 2)

N/mm 2)

N/mm

%Abbreviation

number

min.

min.

min.

X 5 CrNiMo 17 12 2

1.4401

240

255

270

285

550 to 700

3540

4345

X 2 CrNiMo 17 13 2

1.4404

240

255

270

285

550 to 700

3540

4345

X 2 CrNiMoN 17 12 2

1.4406

280

295

310

325

580 to 800

3035

3840

X 6 CrNiMoTi 17 12 2

1.4571

240

255

270

285

540 to 690

3540

4345

*X 2 CrNi N 234

1.4362

400

-450

-600 to 820

--

25-

* Values relate to raw material

A80 mm

A5


21


Chemical Composition

�of some austenitic chrome nickel steels to DIN 17440

USA

France

Abbreviated DIN

material

sf-

CSi

Mn

Cr

Mo

Ni

other

AISI

AFNOR

number

number

Code

not more than

International Standard

Austenitic Steels

303

Z 10 CNF 18/09

X 10 CrNiS 18 9

1.4305

1≤ 0,12

1,0

2,0

17,0 to 19,0

≤ 0,6

8,0 to 10,0

S 0,15 to 0,35

304

Z 6 CN 18/09

X 5 CrNi 18 9

1.4301

2≤ 0,07

1,0

2,0

17,0 to 19,0

-8,0 to 10,0

-

304 L

Z 2 CN 18/11

X 2 CrNi 19 11

1.4306

2L≤ 0,03

1,0

2,0

18,0 to 20,0

-10,0 to 12,5

-

S2304

SAF 2304

X 2 CrNi N 23 4

1.4362

6≤ 0,03

0,5

1,2

23-

4N ≤ 0,1

321

Z 6 CNT 18/10

X 6 CrNiTi 18 10

1.4541

3≤ 0,08

1,0

2,0

17,0 to 19,0

-9,0 to 12,0

Ti ≤ 5 x % C to 0,8

316

Z 6 CND 17/11

X 5 CrNiMo 17 12 2

1.4401

4≤ 0,07

1,0

2,0

16,5 to 18,5

2,0 to 2,5

10,5 to 13,5

-

316

Z 6 CND 17/11

G-X 6 CrNiMo 18 10

1.4408

4i≤ 0,07

1,0

2,0

16,5 to 18,5

2,0 to 2,5

10,5 to 13,5

-

316 L

Z 2 CND 17/12

X 2 CrNiMo 17 13 2

1.4404

4L≤ 0,03

1,0

2,0

16,5 to 18,5

2,0 to 2,5

11,0 to 14,0

-

316 L

Z 2 CND 17/13

X 2 CrNiMo 18 14 3

1.4435

5≤ 0,03

1,0

2,0

17,0 to 18,5

2,5 to 3,0

12,5 to 15,0

S ≤ 0,025

316

Z 6 CND 17/12

X 5 CrNiMo 17 13 3

1.4436

5i≤ 0,07

1,0

2,0

16,5 to 18,5

2,5 to 3,0

11,0 to 14,0

S ≤ 0,025

316 Ti

Z 6 CNDT 17/12

X 6 CrNiMoTi 17 12 2

1.4571

7≤ 0,08

1,0

2,0

16,5 to 18,5

2,0 to 2,5

10,5 to 13,5

Ti ≤ 5 x % C to 0,8

1)if not expressly stated, the phosphorus content may not be more than 0.045% and the sulphur content not more than 0.03%

.


technical information pressure - schwer · pdf file9 sealing seal materials, temperature...

Documents