Pipe Fittings: Carbon Steel

LOKRING Technology Pipe Solutions: Carbon Steel

Savings include using fitter crews over the cost of welders, plus overhead savings such as safety, consumables, inspections and reworks.

Pressure and Temperature Ratings

Carbon Steel Pipe Fittings: CS Series

Lokring Carbon Steel Pipe Fittings

Lokring Size

Pipe NPS

Pressure Rating in PSI (Bar)

ASME B31.1

Pipe Schedules

ASME B31.3

Pipe Schedules

160

CS Pipe Product

P04

1/4”

4890
(337)

6610
(456)

6250
(431)

8810
(607)

P06

3/8”

4040
(279)

5600
(386)

5390
(372)

7470
(515)

P08

1/2”

3890
(268)

5250
(362)

4810
(332)

5190
(358)

7000
(483)

6410
(442)

P12

3/4”

3230
(223)

4400
(303)

4240
(292)

4300
(296)

5870
(405)

5650
(390)

P16

1″

3030
(209)

3975
(274)

3650
(252)

4050
(279)

5300
(365)

4870
(336)

P20

1-1/4″

2480
(171)

3350
(231)

3310
(228)

4460
(308)

P24

1-1/2″

2200
(152)

2930
(202)

3900
(269)

P32

2″

1790
(123)

2420
(167)

2390
(165)

3230
(223)

P40

2-1/2″

2300

(159)

2550

(176)

2670

(184)

2970

(205)

P48

3″

1700
(117)

2260
(156)

2270
(157)

2470
(170)

P64

4″

1980

(137)

2640

(182)

2310

(159)

3070

(212)

* not tested

TEMPERATURE RATING:

Piping systems containing the piping assemblies listed may establish design pressures up to and including the ambient maximum design pressure given for temperature from -20° to 400°F (-28°C to 204°C) for ASME B31.1 and B31.3. For temperatures above 400°F the maximum design pressure given shall be multiplied by the temperature de-rating factor listed below.

Temperature De-rating Table for Carbon Steel (CS) Fittings
Temperature °F (°C)	De-rating Factor B31.1	Temperature De-rating Factor B31.3
400° (204°)	1.00	1.00
500° (260°)	0.95	0.95
600° (316°)	0.87	0.87
650° (343°)	0.75	0.75

LOKRING offers Carbon Steel Repair Couplings which are of a ‘slip-over’ design in order to facilitate repair work. They consist of a stainless steel body with carbon steel drive rings. Their pressure ratings are the same as those of LOKRING’s Stainless Steel Pipe Fittings and have a temperature rating of the Carbon Steel Pipe Fittings

NOTES:

1.	Fitting material Micro Alloyed Carbon Steel (CS-3000) to ASTM A675 or A513
2.	LOKRING Carbon Steel Pipe Fittings are designed with an internal stop facilitating corrosion allowances
3.	See LOKRING Specification FS-3000 for details on Pressure and Temperature Ratings
4.	See LOKRING “Corrosive Service Guidelines” for specific service details
5.	See “LOKRING Fitting Applications Guide” for additional design and service details

MATCHING PIPE:

Carbon Steel pipe to ASTM A106 and A53
ERW Carbon Steel pipe to ASTM A53E and A587
Seamless Carbon Steel pipe to ASTM A106 and A53S
Pipe shall be of high quality, fully annealed construction with maximum Rockwell B scale hardness of 90

General Information

Fitting Size (PXX)	Insertion Depth Pre-Install A	Insertion Depth Pre-Install B	Outside Diameter C	Inside Diameter D	Minimum Straight Run Before a bend, E
1/4”(P04)	1.24”	0.85”	1.05”	0.56”	1.89”
3/8” (P06)	1.37”	0.95”	1.24”	0.69”	2.08”
1/2” (P08)	1.43”	1.01”	1.46”	0.87”	2.24”
3/4” (P12)	1.62”	1.16”	1.60”	1.08”	2.65”
1″ (P16)	1.98”	1.41”	1.95”	1.33”	2.86”
1 1/4″ (P20)	2.21″	1.57″	2.29″	1.68″	3.33″
1 1/2″ (P24)	2.39″	1.72″	2.59″	1.93″	3.64″
2″ (P32)	2.92″	2.16″	3.26″	2.41″	3.95″
3″ (P48)	4.29″	2.99″	4.34″	3.53″	6.12″

1. All dimensions are in inches.
2. Dimensions A, B, C, D, & E are applicable to other fittings of the same size within this catalog.
3. For use on seamless carbon steel pipe as per ASTM A53S and ASTM 106 and ERW carbon steel pipe to ASTM A53E and ASTM A587.
4. Fitting material Micro Alloyed Carbon Steel to LMS 92-10 or LMS 97-20.
5. Standard coating is black oxide per LMS 93-12. Zinc plate is available as an option.
6. Other part configurations than those shown and custom configurations may be available, contact LOKRING for details.
7. All dimensions are for reference only and subject to change (CAD files available upon request).