S500Q/S550Q/S620Q/S690Q Carbon Steel Tube/Pipe

S500Q/S550Q/S620Q/S690Q Carbon Steel Tube/Pipe - Image 3

S500Q/S550Q/S620Q/S690Q Carbon Steel Tube/Pipe - Image 4

S500Q/S550Q/S620Q/S690Q Carbon Steel Tube/Pipe - Image 5

S500Q, S550Q, S620Q, and S690Q carbon steel plates are all high-strength structural steels widely used in construction, machinery manufacturing, and other fields. These steel grades comply with the European standard EN 10025-6, “Hot-rolled structural steel products – Part 6: Technical delivery conditions for high yield strength structural steels.” The corresponding domestic standard is GB/T 16270-2009, “Quenched and tempered steel plates for high-strength structural use.”

Categories: Carbon Steel, Carbon Steel Tube/Pipe

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Carbon Steel Tube/Pipe

Product Introduction

Product Description

Product Name	Seamless Carbon Steel Pipe
Material	A53, ST33, A283, A135, ST37, A53, A106, ST35 , A179, A214, A192, A226, A315, ST42, A106-B
Outside	8~100mm
Wall Thickness	2mm~15mm
Unit Length	3m, 5.8m, 6m, 11.8m, 12m, 13.5m or as per customers’ request
Surface	Bare surface, varnish painting, galvanizing, other painting as per customers’ request
Price Terms	FOB, CRF, CIF, EXW all acceptable
Delivery Detail	Inventory about 5-7; custom-made 25-30

Chemical Composition

Grade	C	Si	Mn	P	S	Cu	Cr	Ni
Cor-ten A	0.12	0.25-0.75	0.20-0.50	0.01-0.2	0.03	0.25-0.55	0.5-1.25	0.65
Cor-ten B	0.16	0.3-0.5	0.8-1.25	0.03	0.03	0.25-0.40	0.4-0.65	≤0.4
SPA-H	0.12	0.2-0.75	0.60	0.07-0.15	0.035	0.25-0.55	0.3-1.25	0.65
9CuPCrNi-A	0.12	0.2-0.75	0.20-0.50	0.07-0.15	0.040	0.25-0.55	0.3-1.25	0.65
Q235NH	0.13	0.10-0.40	0.20-0.60	0.03	0.030	0.25-0.55	0.40-0.80	0.65
Q295NH	0.15	0.10-0.50	0.30-1.00	0.03	0.030	0.25-0.55	0.40-0.80	0.65
Q355NH	0.16	0.5	0.50-1.50	0.03	0.030	0.25-0.55	0.40-0.80	0.65
Q415NH	0.12	0.65	1.10	0.025	0.030	0.20-0.55	0.30-1.25	0.12-0.65
Q460NH	0.12	0.65	1.50	0.025	0.030	0.20-0.55	0.30-1.25	0.12-0.65
Q500NH	0.12	0.65	2.0	0.025	0.030	0.20-0.55	0.30-1.25	0.12-0.65
Q550NH	0.12	0.65	2.0	0.025	0.030	0.20-0.55	0.30-1.25	0.12-0.65
Q265GNH	0.12	0.10-0.40	0.20-0.50	0.07-0.12	0.020	0.2-0.45	0.30-0.65	0.25-0.50
Q295GNH	0.12	0.10-0.40	0.20-0.50	0.07-0.12	0.020	0.25-0.45	0.30-0.65	0.25-0.50
Q310GNH	0.12	0.25-0.75	0.20-0.50	0.07-0.12	0.020	0.25-0.55	0.30-1.25	0.65
Q355GNH	0.12	0.20-0.75	1.00	0.07-0.15	0.020	0.25-0.55	0.30-1.25	0.65
Q345GNHL	0.12	0.25-0.75	0.20-0.50	0.07-0.15	0.035	0.25-0.55	0.30-0.65	0.65
Q295GQR2	0.12	0.10-0.40	0.20-0.50	0.06-0.12	0.020	0.25-0.45	0.30-0.65	0.25-0.5
Q295GQR3	0.12	0.20-0.40	0.25-0.55	0.06-0.12	0.020	0.25-0.50	—	—
Q345NQR2	0.12	0.25-0.75	0.20-0.50	0.06-0.12	0.020	0.25-0.50	0.3-1.25	0.12-0.65
Q345NQR3	0.12	0.20-0.50	0.25-0.70	0.06-0.12	0.020	0.25-0.50	—	—
Q400NQR1	0.12	0.75	1.10	0.025	0.008	0.25-0.55	0.3-1.25	0.12-0.65
Q450NQR1	0.12	0.75	1.50	0.025	0.008	0.25-0.55	0.3-1.25	0.12-0.65
Q500NQR1	0.12	0.75	2.00	0.025	0.008	0.25-0.55	0.3-1.25	0.12-0.65
Q550NQR1	0.16	0.75	2.00	0.025	0.008	0.25-0.55	0.3-1.25	0.65

Mechanical Properties

Carbon content (wt.%)	Microstructure	Properties	Examples
Low-carbon steel	< 0.25	Ferrite, pearlite	Low hardness and cost. High ductility, toughness, machinability and weldability	AISI 304, ASTM A815, AISI 316L
Medium-carbon steel	0.25 – 0.60	Martensite	Low hardenability, medium strength, ductility and toughness	AISI 409, ASTM A29, SCM435
High-carbon steel	0.60 – 1.25	Pearlite	High hardness, strength, low ductility	AISI 440C, EN 10088-3

Packaging and transportation

8unit in 120GP container , 12units in 140HQ container, Fumigated wood tray and 10mm wire fixed.

Application Areas

New steel materials are used in food processing, chemical, construction, automotive, marine, and medical industries, offering durability, corrosion resistance, and strength.

Stainless Steel in Construction & Building

Stainless steel is a vital material for commercial buildings, bridges, and airports, used in structural frames, roofing, wall cladding, handrails, elevator interiors, and even decorative handicrafts.

Stainless Steel in Automotive Manufacturing

Various grades of stainless steel are used to make car bodies, grilles, exhaust systems, fuel tanks, wheel axles, and bearings, thanks to their rust resistance and durability.

Stainless Steel in Chemical & Oil Industries

Ideal for transporting chemicals and liquids, it’s widely used in pipelines, storage tanks, pumps, and processing vessels in chemical, oil, and gas sectors.

Stainless Steel in Medical Applications

With hygienic and corrosion-resistant properties, it’s essential for medical equipment like operating tables, surgical tools, and sterile processing instruments.

Stainless Steel in Household Appliances

Around 75% of home appliances rely on stainless steel, including ovens, refrigerators, washing machines, kitchen hardware, and TV frames.

Stainless Steel in Furniture & Daily Use

Stainless steel coils and sheets are versatile for daily items: trash cans, benches, tables, bookshelves, advertising displays, and outdoor furniture.

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