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PIPE THREAD INFORMATION

Arcellor Controls (INDIA) pipe fittings are available with NPT (National Pipe Taper),
BSP/ISO (British Standard Pipe/International Standards Organisation) and SAE/MS Straight Thread.

Tapered Threads
Specification (s) Type Part No. Or Suffix Designation Sealing Method
NPT
ANSI B1.20.1
M/F N Seal is made on the thread.
Thread sealant is required
ISO 7/1
BS 21
JIS B0203
DIN 2999
M/F
M/F
M/F
Male
RT Seal is made on the thread.
Thread sealant is required
Parallel Threads
Specification (s) Type Part No. Or Suffix Designation Sealing Method
ISO 228/1+2
BS 2779
JIS B0203
Male RP Metal-to metal sealing to
DIN 3852, Form B.
ISO 228/1+2
BS 2779
JIS B0202
Male RS Utilizes a sealing washer to
provide sealing.
Reference DIN 3852, Form A.
ISO 228/1+2
BS 2779
JIS B0202
Female RG Sealing form meets
DIN 3852, Form Y.
BS2779 ISO 288/1+2
with
Elastic Sealing
Male EO Sealing form meets
DIN 3852, Part 2, Form E.
SAE J514 Male SAE Sealing with ‘O’ Ring
Material Code Description
Description of material code
SS316 E
SS316L EL
‘O’ Ring Viton V
‘O’ Ring Buna N

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Customer Care Number

63539 49804

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