Pipe Flanges Raw Material Specifications

A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal.

Requirements are valid for normal situation, in special you have to contact us to introduce.

Material	Test basis / Requirements	Delivery Condition
C 22.8 (1.0460)	DIN 17243: 01.87 + VdTUEV - WB 350/3: 2009   DIN 17243: 01.87   VdTÜV - WB 350/3: 2009	+N
P250GH (1.0460)	DIN EN 10222-2: 04.2000   National Annex	+N
P245GH (1.0352)	EN 10222-2:1999-12 + AC : 2000-02	+N
A105N / C21	ASTM A105/A105M-05/ ASME BPVC Sec.2 Part.A:04   + VdTUEV399/3: 1996-09   + NACE MR 0175: 2000	+N
A105N	ASTM A105/A105M-05/ ASME BPVC Sec.2 Part.A:04   + NACE MR 0175: 2000	+N
C21 (1.0432)	VdTUEV - WB 399/3: 1996-09	+N
RSt 37-2 (1.0038)	DIN 17100: 1980-01	+N
S235JR (1.0038)	DIN EN10025-2: 2005-04	+N
16Mo3 (1.5415)	DIN EN10222-2:1999-12 + AC:2000-02	+N
WStE355 / TStE355   (1.0565 / 1.0566)	DIN EN17103 :1989-10, + VdTUEV-WB 354/3 : 2001-06	+N or QT
P355NH  (1.0565)	DIN EN10222-4: 1998 + A1: 2002-12	+N
WStE355 / P355NH   (1.0565)	DIN EN17103 :1989-10, + VdTUEV-WB 354/3 : 2001-06   + DIN EN10222-4: 1998 + A1: 2002-12   + DIN EN17103 :1989-10   + DIN EN10222-4: 1998 + A1: 2002-12	+N or QT
1.4301 (X5CrNi17-10)	DIN EN10222-5: 2000-02	+AT
1.4306 (X2CrNi19-11)	DIN 17440:1996-09	+AT
1.4401 (X5CrNiMo17-12-2)	DIN EN10222-5: 2000-02	+AT
1.4404 (X2CrNiMo17-12-2)	DIN EN10222-5: 2000-02	+AT
1.4432 (X2CrNiMo17-12-3)	DIN EN10222-5: 2000-02	+AT
1.4541 (X6CrNiTi18-10)	DIN EN10222-5: 2000-02	+AT
1.4571 (X6CrNiMoTi17-12-2)	DIN EN10222-5: 2000-02	+AT
1.4541 / F321	DIN EN10222-5: 2000-02 / +ASTM A 182/A 182M :2005	+AT
1.4571 / F316Ti	DIN EN10222-5: 2000-02 / +ASTM A 240	+AT
1.4404 / F316L	DIN EN10222-5: 2000-02 / +ASTM A 182/A 182M :2005	+AT
1.4306 / F304L	DIN 17440.1996-09 / +ASTM A 182/A 182M : 2005	+AT
1.4307 / F304L	DIN EN10222-5: 2000-02 / +ASTM A 182/A 182M :2005	+AT
Flange	Test basis / Requirements
DIN, Carbon Steel	DIN2519:1991-06   + AD2000-W9: 02.04; -W13/ TRD107;TRB100;   + Directive 97/23/EG Annex I, Chap. 4.3: 1998-02
DIN, corrosion-resistant Steel	DIN2519:1991-06   + AD2000-W9: 02.04; -W2; -W10 / TRD107; TRB100;   + Directive 97/23/EG Annex I, Chap. 4.3: 1998-02
DIN EN 1092-1, Carbon Steel	DIN EN 1092-1: 2008-09   + AD2000-W9; -W13/TRD107;TRB100   + Directive 97/23/EG Annex I, Chap. 4.3: 1998-02
DIN EN 1092-1, Stainless Steel	DIN EN 1092-1: 2008-09   + AD2000-W9; -W2; -W10/ TRD107; TRB100   + Directive 97/23/EG Annex I, Chap. 4.3: 1998-02
ANSI	ASME B16.5:2003   ASME B16.47:2006

Basic requirements for Material and Fitting

Requirements are valid for normal case, in special case you have to contact the technical department.

Material	Test basis / Requirements	Delivery Condition
1.4541 (X6CrNiTi18-10)	DIN 17458:1996-09	+AT
1.4571 (X6CrNiMoTi17-12-2)	DIN 17458:1996-09	+AT
Fittings	Test basis / Requirements
DIN2609 Stainless Steel	VdTUEV –MB 1252/ AD2000- W2; W10/TRD107;TRB100
T-Piece	Directive 97/23/EG Annex I, Chap. 4.3:1998-02
Bow	DIN2615-1
Reducer	DIN2605-1 DIN2616-1

Flange materials acc. to ASTM

Dimensions from carbon steel and stainless steel flanges are defined in the ASME B16.5 standard. The material qualities for these flanges are defined in the ASTM standards.

• Stainless Steel Flanges

These ASTM standards, define the specific manufacturing process of the material and determine the exact chemical composition of pipes, fittings and flanges, through percentages of the permitted quantities of carbon, magnesium, nickel, etc., and are indicated by “Grade”.
For example, a carbon steel flange can be identified with Grade F9 or F11, a stainless-steel flange with Grade F316 or Grade F321 etc..
Below you will find as an example a table with chemical requirements for fittings ASTM A403 Grade WP304, WP304L, WP316L and a table with frequent Grades, arranged on pipe and pipe-components, which belong together as a group.
As you may be have noted, in the table below, ASTM A105 has no Grade. Sometimes ASTM A105N is described;
“N” stands not for Grade, but for normalized. Normalizing is a type of heat treatment, applicable to ferrous metals only. The purpose of normalizing is to remove the internal stresses induced by heat treating, casting, forming etc.

Chemical requirements composition, %

Chemical elements	Grade F304 (A)	Grade F304L (A)	Grade F316L (A-B)
Carbon, max	0.08	0.035	0.035
Manganese, max	2.00	2.00	2.00
Phosphorus, max	0.045	0.045	0.045
Sulfur, max	0.03	0.03	0.03
Silicon, max	1.00	1.00	1.00
Nickel	8-11	8-13	10-15
Chrome	18 – 20	18 – 20	16 – 18
Molybdenum	-	-	2.00-3.00

(A) Carbon 0.040% max. is necessary where many drawing passes are required, as with outside
diameter <0.5 inch (12.7 mm), or nominal wall thickness <0.049 inch (1.2 mm).
(B) On pierced tube, Nickel may be 11 – 16.00%.

ASTM Grades

Material	Fittings	Flanges	Valves	Bolts & Nuts
Carbon Steel	A234 Gr WPA	A105	A216 Gr WCB	A193 Gr B7 A194 Gr 2H
	A234 Gr WPB	A105	A216 Gr WCB
	A234 Gr WPC	A105	A216 Gr WCB
Carbon Steel Alloy High-Temp	A234 Gr WP1	A182 Gr F1	A217 Gr WC1	A193 Gr B7 A194 Gr 2H
	A234 Gr WP11	A182 Gr F11	A217 Gr WC6
	A234 Gr WP12	A182 Gr F12	A217 Gr WC6
	A234 Gr WP22	A182 Gr F22	A217 Gr WC9
	A234 Gr WP5	A182 Gr F5	A217 Gr C5
	A234 Gr WP9	A182 Gr F9	A217 Gr C12
Carbon Steel Alloy Low-Temp	A420 Gr WPL6	A350 Gr LF2	A352 Gr LCB	A320 Gr L7 A194 Gr 7
	A420 Gr WPL3	A350 Gr LF3	A352 Gr LC3
Austenitic Stainless Steel	A403 Gr WP304	A182 Gr F304	A182 Gr F304	A193 Gr B8 A194 Gr 8
	A403 Gr WP316	A182 Gr F316	A182 Gr F316
	A403 Gr WP321	A182 Gr F321	A182 Gr F321
	A403 Gr WP347	A182 Gr F347	A182 Gr F347

ASTM Materials

---

FITTINGS

ASTM A234 = This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction.
ASTM A420 = Standard specification for piping fittings of wrought carbon steel and alloy steel for low-temperature service.
ASTM A403 = Standard specification for wrought austenitic stainless steel piping fittings.

---

FLANGES

ASTM A105 = This specification covers standards for forged carbon steel piping components, that is, flanges, fittings, Valves, and similar parts, for use in pressure systems at ambient and higher-temperature service conditions.
ASTM A182 = This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and parts for high-temperature service.
ASTM A350 = This specification covers several grades of carbon and low alloy steel forged or ring-rolled flanges, forged fittings and Valves for low-temperature service.

---

VALVES

ASTM A216 = This specification covers carbon steel castings for Valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality suitable for assembly with other castings or wrought-steel parts by fusion welding.
ASTM A217 = This specification covers steel castings, martensitic stainless steel and alloys steel castings for Valves, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature and corrosive service.
ASTM A352 = This specification covers steel castings for Valves, flanges, fittings, and other pressure-containing parts intended primarily for low-temperature service.
ASTM A182 = This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and parts for high-temperature service.

---

BOLDS & NUTS

ASTM A193 = This specification covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
ASTM A320 = Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service.
ASTM A194 = Standard specification for nuts in many different material types.

Read your tape measure, in inches. The distance you have found is the diameter of your flange.

Flanges Manufacturing Process

Understanding customers requirement and ensuring to supply as per these requirements is realised with the help of quality assurance at Sunny Steel one of the best Flange Manufacturers in China , our product range include all types of flanges such as MS Flange ( Mild Steel ) , Raised face flange , Weld neck flange, Bellow Flange , and Flanges according to custom requirement.

1. Raw material 4. Steel Heating 7. Flange Rolling 10. Flange mark 13. Final Inspection

2. Material Inspection 5. Forging & Rolling 8. Drilling Holes 11. Antirust Coating >> 14. Well packing >>

3. Steel Cutting 6. Heat Treatment 9. Mark the flange 12. Check Dimensions >> 15. Dispatch

Raw Materials:

Beginning with this process,the system controls the quality of all incoming materials as per the raw material test certificate of the material. Mild Steel Flanges ( MS ) are of premium quality that ensures high durability, strength and resistivity to varied non-supporting conditions. Also, checking in each size for chemical and physical properties of these materials at Government approved laboratory.

The Rust Prevention for Steel Flanges

The normal rust prevention treatment for steel flanges include yellow (Golden) paint Coating, black paint coating or black phosphating treatment, varnish paint coating, varnish antirust oil coating, electro galvanizing coating (Cold), hot dip galvanizing coating etc.

The Packing Works for Steel Flanges  >>

Steel flanges must be packed with seaworthy packing method then delivery to customers, usually the packing way include wooden box, wooden pallet, iron & steel cage, iron & steel pallet etc. Because of the normal wooden boxes or wooden pallets have to do fumigation treatment, we usually use plywood pallet or plywood case or box to pack steel flanges without fumigation treatment. Whatever plywood or iron & steel packing way, they must be seaworthy, strong, waterproof and easy for loading and unloading.

Shipping mark stick to outside of package.

Dispatch:

The final process of dispatch is the most tedious of all , and heavy duty cranes are used for it. With the help of our extensive delivery chain we can ensure time critical deliveries at the behest of our esteemed clients. We are indeed privileged to be able to serve and live upto their expectations and occupy unparalleled postion of Flange makers in China.

Threaded Casing with Short/Long Round Thread or Buttress

Threaded Casing and Supply supplies new and used steel casing pipe, piling pipe, surplus pipe, and used steel pipe.

Pipe For Oil Field 

Standard: API Spec 5 CT

Dimensions

O.D. (mm)		Weight T&C		W.T.	Steel grade
		Lb/ft	Kg/m	mm	H40	J55	K55	N80	L80	C95	P110
4 1/2	114,3	9,5	14,2	5,21	S	S	S	-	-	-	-
		10,5	15,6	5,69	-	S;B	S;B	-	-	-	-
		11,6	17,3	6,35	-	S;L;B	S;L;B	L;B	L;B	L;B	L;B
		13,5	20,1	7,37	-	-	-	L;B	L;B	L;B	L;B
		15,1	22,5	8,56	-	-	-	-	-	-	-
5	127	11,5	17,1	5,59	-	S	S	-	-	-	-
		13	19,4	6,43	-	S;L;B	S;L;B	-	-	-	-
		15	22,3	7,52	-	S;L;B	S;L;B	L;B	L;B	L;B	L;B
		18	26,8	9,19	-	-	-	L;B	L;B	L;B	L;B
		21,4	31,9	11,1	-	-	-	L;B	L;B	L;B	L;B
		23,2	34,6	12,14	-	-	-	L;B	L;B	L;B	L;B
		24,1	35,9	12,7	-	-	-	L;B	L;B	L;B	L;B
5 1/2	139,7	14	20,9	6,2	S	S	S	-	-	-	-
		15,5	23,1	6,98	-	S;L;B	S;L;B	-	-	-	-
		17	25,3	7,72	-	S;L;B	S;L;B	L;B	L;B	L;B	L;B
		20	29,8	9,17	-	-	-	L;B	L;B	L;B	L;B
		23	34,3	10,54	-	-	-	L;B	L;B	L;B	L;B
6 5/8	168,3	20	29,8	7,32	S	S;L	S;L	-	-	-	-
		24	35,7	8,94	-	S;L	S;L	-	-	-	-

where:

S = Short Round Thread

L = Long Round Thread

B = Buttress Thread

Weight per unit calculation formula:

w = (O.D. - W.T.) x W.T. x 0.0246615 (kg/m)

w = (O.D. - W.T.) x W.T. x 10.68 (lb/ft)

Steel Requirements

Steel grade	Chemical requirements							Mechanical requirements
	C	Mn	Ni	Cu	P	S	Si	Tensile strength	Yield strength	Elongation A min.
	max.	max.	max.	max.	max.	max.	max.
	(%)	(%)	(%)	(%)	(%)	(%)	(%)	N/mm2	N/mm2	(%)
H40	-	-	-	-	0,03	0,03	-	min. 414	276-552	calculation
J55	-	-	-	-	0,03	0,03	-	min. 517	379-552	according
K55	-	-	-	-	0,03	0,03	-	min. 655	379-553	to the wall
N80	-	-	-	-	0,03	0,03	-	min. 689	552-758	thickness
L80	0,43	1,9	0,25	0,35	0,03	0,03	0,45	min. 655	552-655
C95	0,45	1,9	-	-	0,03	0,03	0,45	min. 724	655-758
P110	-	-	-	-	0,03	0,03	-	min. 724	655-758

Note:

LENGTHS

Range I : 4,88-7,62 meters

Range II : 7,62-10,36 meters

Range III : 10,36-12,00 meters

PROTECTION

Unprotected or external protection

Each pipe is provided with plastic protectors at both ends.

MARKING

Die stamped or/and paint stenciled according to standard or per customer request.

DELIVERY

In bundles of maximum 2500 kg, tied in minimum four places with steel strps.

MILL TEST REPORT

Mill test reports are issued to customer requirements.

Usually they comply with EN 10204 - 3.1.B (DIN 50049 - 3.1.B)