Q195 Steel Pipe & Tube Manufacturer & Supplier - USA Piping Solution - USA Piping Solution

USA Piping Solution is a significant national supplier facilitating access to Q195 Steel Pipe & Tube. This material designation, originating from the Chinese standard GB/T 700, identifies a plain carbon structural steel commonly employed in applications where high strength is not the primary requirement. Recognizing the potential need for this grade in various contexts, including imported equipment or specific project specifications, we provide reliable sourcing and distribution channels across the United States. For dependable supply of Q195 Steel Pipe & Tube, backed by logistical proficiency and a commitment to quality verification, engage with USA Piping Solution.

What is Q195 Steel Pipe?

The designation Q195 Steel Pipe refers to tubular products manufactured from Q195 grade steel, as defined by the Chinese national standard GB/T 700. Q195 is classified as a plain carbon structural steel. The nomenclature itself provides insight: "Q" represents the first letter of the Pinyin spelling for "qu fu dian," translating to yield point, and "195" indicates the minimum specified yield strength value in Megapascals (MPa), specifically 195 MPa.

Key characteristics of Q195 steel and the resulting tubular products include:

• Low Carbon Content:Typically containing 0.06% to 0.12% carbon, this low level imparts excellent ductility and formability, making the material easy to bend, shape, and weld.

• Low Strength Profile: With a minimum yield strength of 195 MPa and a tensile strength range generally between 315-430 MPa, Q195 is considered a low-strength structural steel. It is not intended for high-stress or critical load-bearing applications where higher-grade steels would be necessary.

• Good Weldability: The low carbon content ensures good weldability using common fusion welding techniques without requiring extensive preheating or post-weld heat treatment in most cases.

• Cost-Effectiveness: As a plain carbon steel with minimal alloying elements, Q195 is generally an economical material choice.

• Chinese Standard Origin: It's important to recognize that Q195 is defined by Chinese GB/T standards. While functionally similar to certain grades in other international standards (like ASTM, JIS, DIN), direct equivalency requires careful comparison of specific chemical and mechanical requirements.

Consequently, Q195 Carbon Steel Pipe is typically utilized in applications where ease of fabrication, general structural support (under low stress), or basic fluid conveyance at low pressure are the primary drivers, and where its cost advantage is beneficial. It is frequently encountered in construction components, furniture, light industrial frameworks, and general-purpose tubing.

Q195 Steel Pipe Specifications

While Q195 itself is a material grade defined by GB/T 700, the pipes and tubes made from it are produced according to various manufacturing and dimensional standards depending on the production method and intended application. USA Piping Solution can source materials conforming to relevant specifications.

Technical Specifications

Property	Description
Material Grade	Q195 (per GB/T 700 or equivalent standard).
Manufacturing Methods	Electric Resistance Welded (ERW): A very common method for producing Q195 pipes and tubes. Formed from steel strip and longitudinally welded. Seamless (SMLS): While less common for this low-strength grade compared to welded, seamless production is possible. Longitudinally Submerged Arc Welded (LSAW): Used for larger diameter pipes. Spiral Submerged Arc Welded (SSAW): Another method for producing large diameter pipes, often for lower pressure applications.
Size Range	Broad ranges are manufacturable, depending on the production method: ERW: Typically 1/8” to 24” OD. SMLS: Typically 1/8” to 36” OD (though less common for Q195). LSAW/SSAW: Can extend to very large diameters (e.g., 16” to 60”+ OD).
Wall Thickness	Varies widely based on OD and production method, from light gauge (e.g., under 2mm) up to thicker walls (e.g., 25mm+) for specific structural needs or larger diameters. Often specified by schedule (e.g., SCH 10, 40, 80) or actual thickness.
Available Shapes	Most commonly Round. Square and Rectangular tubes are also frequently produced from Q195 for structural framing and general fabrication.
Length Options	Supplied in standard lengths (e.g., Single Random Length - SRL approx. 16-22 ft; Double Random Length - DRL approx. 35-44 ft), fixed lengths (e.g., 6m, 12m), or cut-to-length pieces.
End Finish	Typically Plain Ends (PE) cut square, or Beveled Ends (BE) for welding preparation. Threaded Ends (TE) may also be available.
Surface Condition/Coatings	Can be supplied as black (bare with light mill oil), hot-dip galvanized (zinc coated for corrosion protection), painted, varnished, or with specialized coatings like 3LPE or FBE upon request.

Chemical Composition and Mechanical Properties

The fundamental characteristics of Q195 Steel Pipe & Tube are dictated by the chemical requirements and resulting mechanical properties defined for the Q195 steel grade.

Chemical Composition of Q195 Steel (% by Weight)

Q195 is characterized by its low carbon content and controlled levels of other elements.

Element	Q195 Requirement (%)	Impact on Properties
Carbon (C)	0.06 – 0.12	Low carbon ensures high ductility, excellent formability, and weldability.
Manganese (Mn)	0.25 – 0.50	Contributes to baseline strength and workability.
Silicon (Si)	≤ 0.30	Primarily present as a deoxidizing agent from the steelmaking process.
Sulfur (S)	≤ 0.050 (or ≤0.045)	Impurity; limited to maintain ductility and weld quality. (Limit varies by standard version)
Phosphorus (P)	≤ 0.045 (or ≤0.050)	Impurity; restricted to prevent embrittlement. (Limit varies)

Note: These values are typical based on GB/T 700. Specific project requirements might reference slightly different standard versions or have tighter controls.

Mechanical Properties of Q195 Steel Pipe

The mechanical properties reflect its designation as a low-strength structural steel.

Property	Minimum Value (Q195)	Description
Yield Strength	195 MPa (approx. 28 ksi)	The stress at which the material begins to deform permanently.
Tensile Strength	315 - 430 MPa (approx. 46-62 ksi)	The maximum stress the material can withstand before fracturing under tension.
Elongation	Variable (Typically ≥ 25-30%)	A measure of ductility; indicates the ability to stretch before breaking. Higher values signify better formability. (Specific % depends on thickness/standard).

Key Performance Implications:

• High Formability: The low yield strength and high elongation make Q195 exceptionally easy to bend, shape, and form without cracking.

• Good Weldability: The low carbon equivalent ensures straightforward welding using standard techniques.

• Moderate Strength: Suitable for applications where high load-bearing capacity is not the primary design driver.

• General Toughness: Offers adequate toughness for typical ambient temperature applications but is not intended for low-temperature service requiring impact testing.

These properties make Q195 Tube materials well-suited for general fabrication and light structural roles.

Types of Q195 Steel Pipe & Tube

While Q195 designates the steel grade, the actual tubular products made from it come in various forms and conditions based on manufacturing method and intended use:

Manufacturing Methods:

• Q195 ERW Pipe/Tube: Electric Resistance Welded is the most prevalent production method for this grade, offering cost-efficiency for a wide range of sizes. Suitable for general structural and low-pressure conveyance.
• Q195 Seamless Pipe/Tube: While technically possible, seamless production is less common for Q195 compared to higher-strength grades where seamless integrity is more critical or economically justified.
• Q195 LSAW/SSAW Pipe: Longitudinal or Spiral Submerged Arc Welded methods are used primarily for producing large diameter Q195 pipes, often for applications like piling or low-pressure water transport.

Common Shapes:

• Round: Standard form for fluid conveyance and many structural/mechanical uses.
• Square: Frequently used for structural framing, furniture, racks, and general fabrication.
• Rectangular: Also common for structural applications, offering different directional strength properties compared to square tubes.

Surface Conditions:

• Black Pipe: Supplied with a natural mill finish, typically with a light protective oil coating.
• Hot-Dip Galvanized Pipe: Coated with a layer of zinc for enhanced corrosion resistance, suitable for outdoor or corrosive environments (e.g., fencing, scaffolding).
• Pre-Painted/Coated: Can be supplied with various paint or coating systems for aesthetic purposes or specific environmental protection.

The specific type (ERW/Seamless, Round/Square/Rectangular, Black/Galvanized) of Q195 Welded Pipe or tube selected depends entirely on the application's structural needs, environmental exposure, pressure requirements (if any), and cost targets.

Applications and Industries Served

The combination of low cost, excellent formability, and adequate strength for non-critical loads makes Q195 Steel Pipe & Tube a versatile material utilized across numerous industries and applications:

• General Construction:Used for scaffolding, temporary structures, support elements, fencing posts, railings, and framework where high structural loads are not present.
• Furniture Manufacturing: Commonly forms the frames for metal chairs, tables, beds, shelving units, and display racks.
• Agricultural Implements: Utilized in the framework of light-duty farm equipment, gates, pens, and support structures.
• Manufacturing & Fabrication: Serves as general-purpose tubing for jigs, fixtures, supports, conveyor rollers (low load), and various fabricated components.
• Electrical Conduit: Galvanized Q195 tubes are often used as electrical conduit to protect wiring.
• Greenhouses & Hoophouses: Forms the structural framework for agricultural tunnels and greenhouses.
• Low-Pressure Fluid Conveyance: Suitable for transporting water, air, or other fluids at low pressures where corrosion resistance isn't a major concern (black pipe) or where galvanizing provides protection.
• Decorative Uses: Can be used for architectural elements, signage frames, and other applications where formability and cost are key.

Q195 Carbon Steel Pipe is essentially a go-to material for applications demanding ease of fabrication and economy, where the mechanical demands are relatively low. It is not generally suitable for high-pressure piping, critical structural members under significant load, or applications requiring high strength or specific temperature resistance.

Q195 Steel Pipe Size Chart

This chart provides representative dimensions and calculated weights for common sizes of Q195 Steel Pipe & Tube, often produced via ERW. Remember that weights are theoretical estimates.

OD (inch)	OD (mm)	Wall (mm)	Wall (inch)	Wt ( kg/m )	Wt (lbs/ft)	Notes
0.840	21.3	2.0	0.079	0.95	0.64	~1/2" NPS Sch 10 range
1.050	26.9	2.0	0.079	1.21	0.81	~3/4" NPS Sch 10 range
1.315	33.7	2.5	0.098	1.90	1.28	~1" NPS
1.660	42.4	2.5	0.098	2.43	1.63	~1-1/4" NPS
1.900	48.3	2.5	0.098	2.78	1.87	~1-1/2" NPS
2.375	60.3	2.8	0.110	3.88	2.61	~2" NPS
2.875	73.0	3.0	0.118	5.11	3.44	~2-1/2" NPS
3.500	88.9	3.2	0.126	6.67	4.49	~3" NPS
4.000	101.6	3.2	0.126	7.65	5.14	~3-1/2" NPS
4.500	114.3	3.5	0.138	9.39	6.31	~4" NPS
6.625	168.3	4.0	0.157	15.8	10.6	~6" NPS
8.625	219.1	5.0	0.197	25.8	17.3	~8" NPS
12.750	323.9	6.0	0.236	45.9	30.9	~12" NPS

Disclaimer: This table is illustrative. Specific dimensions and weights depend on the manufacturing standard used (e.g., GB/T 3091 for welded pipe) and tolerances. Weights calculated using nominal dimensions and steel density (~7.85 g/cm³).

Certifications and Compliance

While Q195 Steel Pipe & Tube originates from Chinese standards (GB/T), ensuring material quality and traceability remains important. USA Piping Solution works with suppliers providing appropriate documentation.

• Standard Conformance: Materials supplied are intended to meet the chemical and mechanical property requirements associated with the Q195 grade, typically as defined in GB/T 700 for the steel itself, and relevant manufacturing standards (like GB/T 3091 for welded low-pressure pipe, or others) for the tubular product.
• Mill Certification / Documentation: Depending on the source and specific requirements, materials can be supplied with Mill Test Certificates (MTCs) or Certificates of Conformance (CoC). These documents typically verify the chemical composition and may include results of basic mechanical tests (tensile, yield) conducted by the manufacturer.
• ISO 9001 Framework: Our internal quality management system follows ISO 9001 guidelines, ensuring consistent processes for supplier evaluation, material handling, and documentation review.
• Product Markings: Marking practices vary depending on the specific manufacturing standard and size. Markings often include the standard, grade (Q195), size, and manufacturer identification or heat number for traceability.

We strive to provide clear documentation confirming the material grade and basic properties for all Q195 products sourced. Specific testing or certification requirements beyond standard mill practice should be discussed during the inquiry stage.

Why Choose USA Piping Solution for Q195 Steel Pipes?

Even when sourcing materials based on international standards like Q195, partnering with a knowledgeable domestic supplier offers distinct advantages. Consider USA Piping Solution for your Q195 Steel Pipe & Tube needs:

• Global Sourcing Expertise: We possess the network and experience to reliably source materials manufactured to various international standards, including Chinese GB/T specifications like Q195, from qualified producers.
• Understanding Equivalencies: While direct equivalents can be complex, we can help navigate comparisons between Q195 and more familiar ASTM or EN grades to assess suitability for specific applications.
• Domestic Inventory Access: We maintain access to diverse inventories within the US, potentially including commonly used sizes of Q195 or functionally similar alternatives, allowing for faster fulfillment than direct import.
• Efficient Logistics: Our established nationwide distribution network ensures timely and reliable delivery of materials to your location.
• Quality Verification Support: We work to ensure appropriate documentation (MTCs or CoCs) accompanies sourced materials, verifying grade and basic properties.
• Processing Services: We offer value-added services such as cutting pipe and tube to precise lengths required for your fabrication or assembly needs.
• Customer Support: Our team provides responsive service, assisting with inquiries, providing quotations, and managing orders efficiently.

Related Products

USA Piping Solution supplies a comprehensive range of carbon steel pipes and tubes meeting various standards commonly used in the US market:

Comparing the specific requirements of your application against these different standards is crucial for proper material selection. Our team can assist in this process.

Final Call to Action

For applications requiring cost-effective, highly formable Q195 Steel Pipe & Tube, USA Piping Solution offers reliable sourcing and distribution. Whether you need Q195 Carbon Steel Pipe for general construction, furniture, light fabrication, or low-pressure conveyance, we can facilitate your requirements. Leverage our network and logistical capabilities to procure the materials you need efficiently.

Contact USA Piping Solution today to discuss your Q195 Steel Pipe & Tube specifications and receive a tailored, competitive quotation.

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