Stainless Steel - Non Nace Cryogenic (Fittings)
Colour Coding
Black
Sr.No
Line Class
Rating
PWHT
HIC
NACE
CA
Flange Face
Size
Temp Range
1
1SD0P03
CL 150
NO
NO
NO
0
RF
0.5"- 42"
-321 to 302
2
3SD0P03
CL 300
NO
NO
NO
0
RF
0.5" - 42"
-321 to 302
3
6SD0P03
CL 600
NO
NO
NO
0
RF
0.5" - 30"
-321 to 302
4
9SD0P03
CL 900
NO
NO
NO
0
RTJ
0.5" - 12"
-220 to 560
Sr.No
Inspection Requirments As Per PMS
Referance Para
1
Dual-certified SS316/SS316L grade material meet the requirements for the lower maximum carbon content of SS316L grade
(0.03% C) and for the higher minimum yield and tensile strength of the SS316 grade (30 ksi min yield and 75 ksi min tensile
strength).
6.2
2
Stainless steel butt weld fittings shall be seamless up to and including NPS 12”. Fittings greater than NPS 14” shall be EFW
with 100%radiography of weld seam and joint efficiency factor of 1.0.
6.13
3
The minimum wall thickness for Nipples to allow for increased mechanical strength shall be: Sch 40S
6.13.2
4
When "CRYOGENIC SERVICE" is specified in the item description of Welded items,there welds shall be impact tested at 196°C as per respective ASTM / ASME standards.
5
The acceptability criterion for impact tests on welds intended for cryogenic service is achieving a lateral expansion of at least
0.38mm opposite the notch.
ASME SEC IIC
Para A9.3.1
Sr.No
Inspection Requirments As Per 02-SAMSS-013
Referance Para
MR: PP-866-MR0009; Para 5.6.3.5
1
All fittings shall be Class “S” or “WX”. All welds, whether made by the pipe or fitting manufacturer, shall be radiographed
after forming.
02-SAMSS-13
Para 5.1
2
All non-‘L’ grades (e.g., 316) shall have a minimum carbon content of 0.04%. This requirement is not mandatory if the design
temperature is less than 538°C.
02-SAMSS-13
Para 7.5
02-SAMSS-13
Para 10
3
4
Chemical Composition
• Carbon: 0-0.03% • Chromium: 16-18% • Molybdenum: 2-3% • Nickel: 10-14%
ASME SEC IIA
SA403
Pitting Resistance Equivalent (PRE) (%Cr+3.3%Mo+16%N) for the base material and weld metal for the grades listed below
shall be greater than or equal to that shown in Table 1 - Pitting Resistance Equivalent
02-SAMSS-13
Para 7.6
5
The entire inside and outside surface of fittings, regardless of size, shall be liquid penetrant tested in accordance with ASTM
E165. The acceptance criteria shall be as per ASME SEC VIII D1. Frequency and number of fittings to be tested shall be in
accordance with Table 4. If any fitting fails the penetrant test then all of the fittings in the entire lot must be tested.
6
02-SAMSS-13
Para 12.3
Stainless Steel - Non Nace Cryogenic (Fittings)
Colour Coding
Black
Sr.No
Line Class
Rating
PWHT
HIC
NACE
CA
Flange Face
Size
Temp Range
1
1SD0P03
CL 150
NO
NO
NO
0
RF
0.5"- 42"
-321 to 302
2
3SD0P03
CL 300
NO
NO
NO
0
RF
0.5" - 42"
-321 to 302
3
6SD0P03
CL 600
NO
NO
NO
0
RF
0.5" - 30"
-321 to 302
4
9SD0P03
CL 900
NO
NO
NO
0
RTJ
0.5" - 12"
-220 to 560
Sr.No
7
Inspection Requirments As Per PMS
Referance Para
02-SAMSS-13
Para 12.4
All welds in fabricated fittings shall be 100% radiographed after heat treatment
Hardness tests shall be conducted on at least one fitting from each heat treatment batch and heat of material.
02-SAMSS-13
Para 12.5.1
8
9
All fittings shall be pickled and passivated in accordance with ASTM A380.
02-SAMSS-13
Para 13.1
10
PMI shall be conducted randomly on finished fittings on each lot before dispatch. A minimum of 10% of fittings in each heat
must be tested.
02-SAMSS-13
Para 14.1
11
It shall be certified that the radiation levels from the fittings is less than 100 beckerels/gram or 0.5 μSV/hr. Results shall be
included in the material’s test certificate.
02-SAMSS-13
Para 15.9
Verified By: ______Parthiban J____________
(Material Receiving Inspector)