Carbon Steel Structure/Fluid Pipe

Full‑set global standards: GB, ASTM A53/A106, EN 10217/10219, JIS G3452/G3454
Wide size coverage NPS1/4″‑24″, multiple Sch wall‑thickness grades available
Flexible length: 6m /12m standard, custom 3‑18m non‑standard cut‑to‑length
Custom end processing: cut‑to‑piece, plain end, bevel end for site installation

Product Overview

Carbon Steel Structure/Fluid Pipe is a reliable tubular steel product designed for structural support applications and fluid transportation systems. Manufactured from carbon steel materials, it provides a practical solution for construction frameworks, mechanical structures, and industrial piping requirements where strength, dimensional accuracy, and stable performance are required.

This carbon steel pipe product is available according to international standards including GB/T, ASTM, EN, and JIS specifications. Common material grades include Q195, Q215, Q235B, Q355B, A53 Grade A/B, A106 Grade A/B/C, S195T, S235JR, S275JR, S355JR, STK400, STK490, STPG370, and STPG410.

With multiple size options, wall thickness ranges, and processing capabilities, Carbon Steel Structure/Fluid Pipe is suitable for applications such as building structures, municipal engineering pipelines, fire protection systems, equipment supports, and industrial fluid transmission projects.

Carbon Steel Structure/Fluid Pipe

Chemical & Mechanical Property Snapshot

Grade	C Max (%)	Si Max (%)	Mn Max (%)	P Max (%)	S Max (%)	Yield Strength Min (MPa)	Tensile Strength (MPa)	Elongation Min (%)
Q235B	0.20	0.35	1.40	0.045	0.045	235	375–500	26
Q355B	0.20	0.50	1.60	0.035	0.035	355	470–630	21
A53 Gr.B	0.30	0.10	1.20	0.05	0.045	240	415	20
A106 Gr.B	0.30	0.10	0.90–1.20	0.035	0.035	240	415–550	30
S235JR	0.17	0.35	1.40	0.035	0.035	235	360–510	25
S355JR	0.24	0.55	1.60	0.035	0.035	355	470–630	21

Detailed Technical Specifications

Item	Specification
Product Name	Carbon Steel Structure/Fluid Pipe
Material	Carbon Steel
International Standards	GB/T 3091, ASTM A53, ASTM A106, EN 10217, EN 10219, JIS G3452, JIS G3454
China GB Grades	Q195, Q215, Q235B, Q355B (Equivalent Q345B), 20#, 45#
ASTM Grades	A53 Gr.A, A53 Gr.B, A106 Gr.A, A106 Gr.B, A106 Gr.C, A36
EN Grades	S195T, S235JR, S275JR, S355JR, P265GH
JIS Grades	STK400, STK490, STPG370, STPG410
Nominal Pipe Size	NPS 1/4″–24″
Metric Diameter Range	DN6–DN600
Common Wall Thickness Grades	Schedule 20 / Schedule 40 / Schedule 80 / Schedule 160 / XS
Pipe Diameter Range	DN15 (21.3mm), DN20 (26.9mm), DN25 (33.7mm), DN32 (42.4mm), DN40 (48.3mm), DN50 (60.3mm), DN65 (76.1mm), DN80 (88.9mm), DN100 (114.3mm), DN150 (168.3mm), DN200 (219.1mm)–DN600
Standard Length	6m / 12m
Customized Length	Available, non-standard length 3–18m according to requirements
Pipe End Options	Plain end, beveled end, threaded end
Processing Capability	Cutting, beveling, welding preparation, customized pipe-end processing
Applications	Building steel structure frameworks, factory steel structures, water and fluid transmission pipelines, municipal engineering pipelines, fire protection pipelines, guardrails, scaffolding foundation pipes, mechanical structures, bridge steel structures, low-pressure fluid pipelines, large steel structures
MOQ	5 Ton
Payment Terms	T/T, L/C at Sight
Delivery Time	7–15 working days after receiving deposit
Package	Waterproof paper + galvanized steel strap + seaworthy export wooden pallet

Pipe Shape Options Table

Shape Type	Abbreviation	Cross Section	Production Type	Main Application
Round Carbon Steel Pipe	CHS	Circular Hollow Section	Seamless / ERW Welded	Fluid transportation, pipelines, general structures
Square Carbon Steel Pipe	SHS	Square Hollow Section	Welded / Seamless	Building frames, machinery supports, construction structures
Rectangular Carbon Steel Pipe	RHS	Rectangular Hollow Section	Welded / Seamless	Steel structures, container frames, guardrails

Dimension Range Table

NPS	DN	ASME OD (mm)	SCH10 Wall Thickness (mm)	SCH20 Wall Thickness (mm)	SCH30 Wall Thickness (mm)	STD Wall Thickness (mm)	SCH40 Wall Thickness (mm)	SCH60 Wall Thickness (mm)	XS Wall Thickness (mm)	SCH80 Wall Thickness (mm)	SCH100 Wall Thickness (mm)	SCH120 Wall Thickness (mm)	SCH140 Wall Thickness (mm)	SCH160 Wall Thickness (mm)	XXS Wall Thickness (mm)
1/4″	DN6	13.7	—	—	—	2.77	2.77	—	3.73	3.73	—	—	—	4.78	7.47
3/8″	DN10	17.1	—	—	—	2.77	2.77	—	3.73	3.73	—	—	—	5.56	7.82
1/2″	DN15	21.3	2.11	2.11	—	2.77	2.77	—	3.91	3.91	—	—	—	6.55	9.09
3/4″	DN20	26.9	2.11	2.11	—	2.77	2.87	—	3.91	3.91	—	—	—	6.55	9.70
1″	DN25	33.7	2.77	2.77	—	3.38	3.38	—	4.55	4.55	—	—	—	7.82	11.07
1 1/4″	DN32	42.4	2.77	2.77	—	3.56	3.68	—	4.85	4.85	—	—	—	7.82	11.07
1 1/2″	DN40	48.3	2.77	2.77	—	3.68	3.91	—	5.08	5.08	—	—	—	7.82	11.07
2″	DN50	60.3	3.05	3.05	—	3.91	3.91	—	5.54	5.54	—	7.82	—	11.13	15.25
2 1/2″	DN65	76.1	3.05	3.05	—	5.16	5.16	—	7.01	7.01	—	9.53	—	14.02	17.12
3″	DN80	88.9	3.05	3.05	—	5.49	5.49	—	7.62	7.62	—	11.13	—	15.24	19.05
3 1/2″	DN90	101.6	3.05	3.05	—	5.74	5.74	—	8.08	8.08	—	12.70	—	15.24	19.05
4″	DN100	114.3	3.05	3.05	—	6.02	6.02	—	8.56	8.56	—	12.70	—	15.24	19.05
5″	DN125	139.7	3.40	3.40	—	6.55	6.55	—	9.53	9.53	—	12.70	—	19.05	22.23
6″	DN150	168.3	3.40	3.40	—	7.11	7.11	—	10.97	10.97	—	12.70	—	21.95	28.58
8″	DN200	219.1	4.19	4.78	—	8.18	8.18	10.31	12.70	12.70	15.09	18.26	20.62	23.01	22.23
10″	DN250	273.0	4.57	6.35	—	9.27	9.27	12.70	12.70	15.09	18.26	21.44	25.40	28.58	25.40
12″	DN300	323.8	6.35	6.35	—	9.53	10.31	14.27	12.70	17.48	21.44	25.40	28.58	33.32	25.40
14″	DN350	355.6	6.35	7.92	—	9.53	11.13	15.09	12.70	19.05	23.83	27.79	31.75	35.71	—
16″	DN400	406.4	6.35	7.92	—	9.53	12.70	16.66	12.70	21.44	26.19	30.96	34.93	38.89	—
18″	DN450	457.0	6.35	7.92	—	9.53	12.70	19.05	12.70	23.83	28.58	34.93	38.10	46.02	—
20″	DN500	508.0	6.35	9.53	—	9.53	12.70	20.62	12.70	26.19	32.54	38.10	41.28	52.37	—
22″	DN550	558.8	6.35	9.53	—	9.53	12.70	22.23	12.70	28.58	34.93	41.28	44.45	59.54	—
24″	DN600	609.6	6.35	9.53	—	9.53	12.70	24.61	12.70	30.96	38.10	44.45	50.01	59.54	—

Product Comparison Table

GB Grade	ASTM Equivalent	EN Equivalent	JIS Equivalent	Key Feature	Typical Application
Q195	A53 Gr.A	S195T	STK400	Low carbon, excellent formability	Light structures, low-pressure fluid pipes, frames
Q215	A53 Gr.A	S195T	STK400	Good weldability, easy bending	General structural parts, fluid delivery pipelines
Q235B	A36 / A53 Gr.B	S235JR	STK490	Balanced strength and weldability, widely used grade	Building structures, general fluid pipes, support frames
Q355B (Old Q345B)	A53 Gr.B	S355JR	STK490	High tensile strength, low-alloy steel	Heavy structures, mechanical equipment, medium-pressure fluid applications
20#	A106 Gr.B	P265GH	STPG370	Fine grain, good high-temperature performance	Seamless fluid pipes, boiler pipes, heat-exchanger pipes
45#	A106 Gr.C	—	STPG410	High hardness, good wear resistance	Mechanical shafts, high-load structural components

App Market

Reliable Steel Coil Solutions For Diverse Industrial Applications

Drainage and Fluid Conveying Pipelines

Factory Building Columns and Beams

Building Steel Space Frame Structure

Product Packaging

Secure Export Packaging For Safe Handling And Delivery

FAQs

What is Carbon Steel Structure/Fluid Pipe used for?

Carbon Steel Structure/Fluid Pipe is used for structural frameworks, mechanical supports, and fluid transportation systems in construction, industrial, and municipal projects.

What standards are available for Carbon Steel Structure/Fluid Pipe?

Carbon Steel Structure/Fluid Pipe can be supplied according to GB/T, ASTM, EN, and JIS standards, including ASTM A53, ASTM A106, and GB/T 3091.

What sizes are available for carbon steel pipe products?

The available range includes NPS 1/4"–24" (DN6–DN600), with different wall thickness schedules such as Schedule 20, Schedule 40, Schedule 80, and Schedule 160.

Can the pipe length and ends be customized?

Yes. Pipe length, end type, beveling, and other processing requirements can be customized according to project needs.

How do I choose between structural pipe and fluid transportation pipe?

Selection depends on the application requirement, including structural loading, fluid medium, pressure requirements, standard specification, and installation method.

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Carbon Steel Structure/Fluid Pipe