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pre-fabricated piping spools

Steel Pipe Spool type:Seamless & Welded
Value Added Services Provided By Manufacturer:Design, Engineering & Fabrication
Size:114mm to 2500mm diameter (Seamless & Welded, Fabricated)
Operating Pressures :As required/as per drawings
Maximum Velocities : As required/as per drawings
Operating Temperatures：As required/as per drawings
Hydro Tested Pressure:As required/as per drawings
Class :150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard:ND-6,10, 16, 25, 40
Thickness :As required/as per drawings
Specialize :As required/as per drawings
Form :Round, Square, Rectangle Hydraulic, Horn Pipe etc.
Material:Carbon Steel, Stainless Steel, Hastelloy, Alloy Steel, Nickel Alloy, Copper, Duplex Steel & Super duplex
Sizes：By Manufacturer:as per customer specification
Usage/Applications :Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects.

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Introduction

Steel Pipe Spool type:Seamless & Welded
Value Added Services Provided By Manufacturer:Design, Engineering & Fabrication
Size:114mm to 2500mm diameter (Seamless & Welded, Fabricated)
Operating Pressures:As required/as per drawings
Maximum Velocities : As required/as per drawings
Operating Temperatures：As required/as per drawings
Hydro Tested Pressure:As required/as per drawings
Class :150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard:ND-6,10, 16, 25, 40
Thickness :As required/as per drawings
Specialize:As required/as per drawings
Form :Round, Square, Rectangle Hydraulic, Horn Pipe etc.
Material:Carbon Steel, Stainless Steel, Hastelloy, Alloy Steel, Nickel Alloy, Copper, Duplex Steel & Super duplex
Sizes：By Manufacturer:as per customer specification
Usage/Applications :Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects.

A piping system is a vast network of components each, having its own unique function. Pipe Spools are devices in this vast system, which are pre-fabricated across smaller segments. These components include flanges, fittings, and pipes, which are mounted during the fabrication process and delivered to the consumer. A Pipe Cleaner Spool is prone to corrosion due to their exposure to different environmental elements. This is why we offer these components with enhanced tolerances after processing them further. The Pipe Chain Spool is very reliable and durable

A Pipe Spool Flange can be used in connecting long pipes with the tips of flanges. This enables them to be easily bolted to another pipe or a matching flange. They are widely seen in the construction of power plants, petroleum refineries that require a variety of materials to function well.

Materials Used in Pre-Fabricated Pipe Spools
Pipes:

Carbon Steel – ASTM A333 grade 6,ASTM A106, ASTM A53 grade B , API 5L Grade B X42/65/70 (for general and high-pressure applications)
Stainless Steel – ASTM A312 TP304/L, TP316/L, TP321, Duplex S31803. Duper Duplex S32750/S32760
Alloy Steel –ASTM A335 P11, P22, P91,P92 (for high-temperature & pressure applications)

Fittings:Elbow,Tee,reducer.Caps.

Carbon Steel – ASTM A234 WPB, A420 WPL6
Stainless Steel – A403 WP304/L, WP316/L, WP321,,S31803. Duper Duplex S32750/S32760
Alloy Steel –ASTM A234 W P11, WP22, WP91,WP92 (for high-temperature & pressure applications)

Flanges

Carbon Steel – ASTM A105, ASTM A350 LF2
Stainless Steel – A182 F304/L, F316/L, F321, F51/F53/F55,S31803. Duper Duplex S32750/S32760
Alloy Steel ,A182 F11,F12,F5,F91,92

Fabricated Pipe Spool Parts

Reducer – Concentric reducer, eccentric reducer
Pipes – Seamless/Welded
Tee – Equal Tee, Unequal Tee
Flanges – Blind, weld neck, slip-on, etc.
Elbow – 90° / 45° / 180°

Specification

Prefabricated Pipe Spools

Spool Consturction Type	Material	Size Range	Thickness or Schedule
Spool Consturction Type	Material	Size Range	Min (mm)	Max (mm)
Seamless Fabricated	Carbon Steel	0.5" to 30"	10s/3 mm	XXS/85 mm
Seamless Fabricated	Alloy Steel	0.5" to 30"	10s/3 mm	XXS/85 mm
Seamless Fabricated	Stainless Steel	0.5" to 24"	10s/3 mm	XXS/70 mm
Welded Fabricated	Carbon Steel	0.5" to 96"	10s/8 mm	XXS/85 mm
Welded Fabricated	Alloy Steel	0.5" to 48"	10s/8 mm	XXS/85 mm
Welded Fabricated	Stainless Steel	0.5" to 74"	10s/6 mm	XXS/70 mm

List of Pipe Spools material

Construction of Material	List of Grades
Stainless Steel Pipe Spools	ASTM A403 WP Grade 304, 304L, 304H, 309, 310, 316, 316L, 316Ti, 317L, 321, 347, 347H, and 904L Spool
Carbon Steel pipes Spools	ASTM A 234 WPB, WPHY 42, WPHY 46, WPBW, WPHY 52, WPH 60, WPHY 65 & WPHY 70 Spool
Low Temperature Carbon Steel Pipe Spools	ASTM A420 WPL3, A420 WPL6 Spool
Alloy Steel Pipe Spools	ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91 Spool
Duplex pipes Spools	ASTM A815, ASME SA 815 UNS 31803, UNS 32205 (Dual Certified), 2205, 2507 Spool
Ductile Iron Spool	Ductile Iron Flanged Spool

Carbon Steel Flanged Pipe Spool Dimensions

To suit pipework NB		Length Min.	Length Max.	PTFE liner Thickness
Inches	mm	mm	mm	mm
1/2″	15	90	6000	2.3
3/4″	20	90	6000	3.2
1″	25	90	6000	3.3
4″	100	125	6000	4.5
6″	150	140	6000	5.5
8″	200	150	3000	8.5
1.1/2″	40	95	6000	3.2
2″	50	110	6000	3.2
3″	80	120	6000	3.2
14″	350	190	3000	8.3
10″	250	165	3000	9.1
12″	300	170	3000	10.

Alloy Steel Pipe Spool Dimensions, Size and Schedule

DN/NPS (Inch)	OD (mm)	10	20	30	STD	40	60	XS	80	100	120	140	160	XXS
1/8	10.3	–	–	–	1.73	1.73	–	2.41	2.41	–	–	–	–	–
1/4	13.7	–	–	–	2.24	2.24	–	3.02	3.02	–	–	–	–	–
1	33.4	–	–	–	3.38	3.38	–	4.55	4.55	–	–	–	6.35	9.09
1 1/4	42.2	–	–	–	3.56	3.56	–	4.85	4.85	–	–	–	6.35	9.7
1 1/2	48.3	–	–	–	3.68	3.66	–	5.08	5.08	–	–	–	7.14	10.15
3/8	17.1	–	–	–	2.31	2.31	–	3.2	3.2	–	–	–	–	–
1/2	21.3	–	–	–	2.77	2.77	–	3.73	3.73	–	–	–	4.78	7.47
3/4	26.7	–	–	–	2.87	2.87	–	3.91	3.91	–	–	–	5.56	7.82
2	60.3	–	–	–	3.91	3.91	–	5.54	5.54	–	–	–	8.74	11.07
2 1/2	73	–	–	–	5.16	5.16	–	7.01	7.01	–	–	–	9.53	14.02
3	88.9	–	–	–	5.49	5.49	–	7.62	7.62	–	–	–	11.13	15.24
3 1/2	101.6	–	–	–	5.74	5.74	–	8.08	8.08	–	–	–	–	–
12	323.9	–	6.35	8.38	9.53	10.31	14.27	12.7	17.48	21.44	25.4	28.58	33.32	25.4
14	355.6	6.35	7.92	9.53	9.53	11.13	15.09	12.7	19.05	23.83	27.79	31.75	35.71	–
16	406.4	6.35	7.92	9.53	9.53	12.7	16.66	12.7	21.44	26.19	30.96	36.53	40.49	–
18	457	6.35	7.92	11.13	9.53	14.27	19.05	12.7	23.88	29.36	34.93	39.67	45.24	–
20	508	6.35	9.53	12.7	9.53	15.09	20.62	12.7	26.19	32.54	38.1	44.45	50.01	–
22	559	6.35	9.53	12.7	9.53	–	22.23	12.7	28.58	34.93	41.28	47.63	53.98	–
24	610	6.35	9.53	14.27	9.53	17.48	24.61	12.7	30.96	38.89	46.02	52.37	59.54	–
4	114.3	–	–	–	6.02	6.02	–	8.56	8.56	–	11.13	–	13.49	17.12
5	141.3	–	–	–	6.55	6.55	–	9.53	9.53	–	12.7	–	15.88	19.05
6	168.3	–	–	–	7.11	7.11	–	10.97	10.97	–	14.27	–	18.2	21.95
8	219.1	–	6.35	7.04	8.18	8.18	10.31	12.7	12.7	15.09	18.26	20.62	23.01	22.23
10	273.1	–	6.35	7.8	9.27	9.27	12.7	12.7	15.09	18.26	21.44	25.4	28.58	25.4
26	660	7.92	12.7	–	9.53	–	–	12.7	–	–	–	–	–	–
28	711	7.92	12.7	15.88	9.53	–	–	12.7	–	–	–	–	–	–
30	762	7.92	12.7	15.88	9.53	–	–	12.7	–	–	–	–	–	–
32	813	7.92	12.7	15.88	9.53	17.48	–	12.7	–	–	–	–	–	–
42	1067	–	–	–	9.53	–	–	12.7	–	–	–	–	–	–
44	1118	–	–	–	9.53	–	–	12.7	–	–	–	–	–	–
46	1168	–	–	–	9.53	–	–	12.7	–	–	–	–	–	–
34	864	7.92	12.7	15.88	9.53	17.48	–	12.7	–	–	–	–	–	–
36	914	7.92	12.7	15.88	9.53	19.05	–	12.7	–	–	–	–	–	–
38	965	–	–	–	9.53	–	–	12.7	–	–	–	–	–	–
40	1016	–	–	–	9.53	–	–	12.7	–	–	–	–	–	–
48	1219	–	–	–	9.53	–	–	12.7	–	–	–	–	–	–

Custom Pipe Spools Main Stainless Steel Materials:

Specifications:

Material & Grade	Stainless Steel ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
Dimension	ASME B16.9, ANSI B16.9, ASME B16.28, ANSI B16.28, ANSI B16.25

Equivalent Grades:

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 304	1.4301	S30400	SUS 304	304S31	08?18?10	Z7CN18?09	X5CrNi18-10
SS 304L	1.4306/1.4307	S30403	SUS 304L	304S11	03?18?11	Z3CN18?10	X2CrNi18-9 / X2CrNi19-11

Chemical Composition:

Element	Ni	C	Mn	P	S	Si	Cr
SS 304	8.0 – 11.0	0.08	2.0 max	0.045 max	0.03 max	1.0 max	18.0 – 20.0
SS 304L	8.0 – 13.0	0.35	2.0 max	0.045 max	0.03 max	1.0 max	18.0 – 20.0

Mechanical & Physical Properties:

Element	Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
SS 304	8.0 g/cm3	1400 °C (2550 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %
SS 304L	8.0 g/cm3	1400 °C (2550 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %

Manufacturing process

Pre-Fabrication Process
1. Engineering & Design

Detailed isometric drawings, P&ID, and 3D models are created
Selection of materials, pipe sizes, and fittings
Weld mapping and non-destructive testing (NDT) planning

2. Material Procurement & Cutting

Pipes and fittings ,flanges are made according to project specifications
Precision cutting using CNC machines, saws, and plasma cutting

3. Welding & Assembly

Butt welding, socket welding, and TIG/MIG welding for strong joints
Flanges, elbows, tees, and valves are fitted as per design
Welding inspected using X-ray, ultrasonic, or dye penetration testing

4. Surface Treatment & Coating

Galvanization, painting, or powder coating for corrosion resistance
Internal lining (FBE, epoxy, rubber, or FRP) based on application

5,Testing & Quality Control

Hydrostatic pressure testing ensures leak-proof operation
Dimensional and alignment checks for precision
NDT (Radiography, UT, MPI) to detect welding defects

6. Packaging & Transportation

Pipe spools are labeled, bundled, and shipped to the installation site

If you have any inquiries and questions, please contact CONTINENTAL STEEL CO.,LTD. at any time. Thanks in advance. Welcome!

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