Carbon Steel Pipe Fitting

Carbon Steel Pipe Fitting Manufacturer & Wholesale Supplier

Shanxi Yuanhang Machinery Construction Industry and Trade Co., Ltd. manufactures and supplies industrial-grade carbon steel pipe fittings engineered for high-pressure fluid transportation, petrochemical processing, and power generation piping. Our production capabilities cover hot forming, mandrel bending, cold pressing, precision beveling, and normalized heat treatment, serving global pipeline distributors, EPC contractors, and mechanical equipment manufacturers.

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Product Range

Carbon Steel Elbows

Long radius (LR) and short radius (SR) 90-degree, 45-degree, and 180-degree elbows manufactured to ASME B16.9 and ANSI B16.11 specifications for smooth fluid redirection.

Equal & Reducing Tees

Straight and reducing tees engineered to maintain structural strength and uniform flow distribution under high-pressure branch connections.

Concentric & Eccentric Reducers

Seamless and welded reducers designed to transition pipeline diameters smoothly while preventing fluid turbulence or air pocket formation.

Pipe Caps & Stub Ends

Heavy-duty pipe end closures and lap joint stub ends built for secure line termination and flange connection assemblies.

Materials & Technical Specifications

Category	Parameter	Specifications
Butt-Weld Elbows & Tees	Standard / Grade	ASME/ANSI B16.9, MSS SP-75, ASTM A234 Gr. WPB / WPC
	Material Options	Killed Carbon Steel (ASTM A106 Gr. B, API 5L Gr. B, Q345B)
	Size / Dimension Range	NPS 1/2 inch–48 inch / Wall Thickness: Sch 10 to XXS
	Surface Finish Options	Shot Blasted, Anti-Rust Black Paint, Transparent Rust-Proof Oil
High-Pressure Forged Fittings	Standard / Grade	ASME B16.11, BS 3799 (Threaded / Socket-Weld)
	Material Options	ASTM A105N, ASTM A350 LF2 (Low-temperature service)
	Size / Dimension Range	NPS 1/8 inch–4 inch / Pressure Rating: 2000LBS, 3000LBS, 6000LBS
	Surface Finish Options	Phosphated, Electro-Galvanized, Hot-Dip Galvanized
Reducers & Pipe Caps	Standard / Grade	ASME B16.9, ASTM A234 WPB, EN 10253-2
	Material Options	Carbon Steel Plate and Seamless Pipe Stock
	Size / Dimension Range	NPS 1 inch x 3/4 inch up to NPS 48 inch
	Surface Finish Options	Shot-Blasted Clean, Primer Coated
Low-Temperature Carbon Steel Fittings	Standard / Grade	ASTM A420 WPL6, MSS SP-75 WPHY 52/60/65
	Material Options	Fine-grain carbon steel with impact testing requirements (-46 deg C)
	Size / Dimension Range	NPS 1/2 inch–36 inch / Sch 40 to XXS
	Surface Finish Options	Anti-Corrosion Primer, Bare with Rust Inhibitor

Manufacturing Standards & Quality Control

Every production batch undergoes structured quality verification gates to inspect wall thickness, dimensions, and metallurgical structure prior to dispatch:

Standard Compliance: Manufacturing follows ASME, ANSI, MSS, ASTM, EN, and ISO specifications.

Material Traceability: Spectrometric chemical analysis is performed on incoming raw steel materials. Mill Test Certificates (MTC) conforming to EN 10204 3.1 are provided with all shipments.

Heat Treatment Verification: Formed carbon steel fittings undergo full normalization or stress-relieving heat treatment to eliminate internal forming stresses and restore uniform grain structures.

Dimensional & NDT Inspection: Ultrasonic wall thickness measurement checks outer arc thinning.

Bevel angles, root face dimensions, and out-of-roundness are verified using precision gauges. Magnetic Particle Testing (MT) or Radiographic Testing (RT) is applied upon specification.

90 Degree Carbon Steel Elbow For Construction Infrastructure suppliers

Customization & Supply Options

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Custom Fabrication: Non-standard wall thicknesses (such as intermediate schedules), special bevel configurations, custom radius bends, and specific low-temperature impact testing requirements.

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OEM Branding & Marking: Low-stress stamped heat numbers, steel grade legends, nominal pipe sizes, manufacturer logos, and weather-resistant export wooden crating.

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Minimum Order Quantity (MOQ): Flexible batch production starting from 100 pcs for standard sizes; trial production orders accepted for specialized project items.

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Lead Time & Logistics: Standard inventory items ship within 7 to 10 days. Custom-formed or heat-treated production batches typically require 20 to 30 days. Shipped via FOB Tianjin/Qingdao, CIF, or DDP to destination ports.

Our Factory

FAQ

Q: Do your carbon steel pipe fittings include EN 10204 3.1 Mill Test Certificates?

A: Yes. Every shipment includes a 3.1 Mill Test Certificate detailing chemical composition, tensile strength, yield strength, elongation, hardness, and heat treatment records corresponding to the raw material heat numbers.

Q: What heat treatment is applied to your ASTM A234 WPB butt-weld fittings?

A: Depending on the forming method (hot-forming or cold-forming followed by sizing), fittings undergo normalizing, sub-critical annealing, or stress-relieving heat treatments to ensure mechanical properties comply with ASTM standards.

Q: How do you control wall thickness thinning on the outer arc of formed elbows?

A: We utilize advanced mandrel forming technology and strict temperature control during hot-bending to limit outer wall thinning within allowable ASME B16.9 manufacturing tolerances.

Q: Can you supply low-temperature carbon steel fittings certified to ASTM A420 WPL6?

A: Yes. We manufacture ASTM A420 WPL6 fittings complete with Charpy V-notch impact testing performed at -46 deg C to satisfy low-temperature piping and refrigeration service requirements.

Q: Are the bevel angles on your butt-weld fittings machined to ASME B16.9 specifications?

A: Yes. All butt-weld ends feature machine-cut bevels (typically 37.5 degrees with a root face) to ensure proper alignment and penetration during site welding.

Q: What is the lead time for non-standard wall thickness or special radius carbon steel fittings?

A: Technical drawing review and tooling setup require 7 to 10 working days, with full production and testing completed within 20 to 25 days.

Request a Quote

Need high-pressure carbon steel pipe fittings, elbows, tees, or reducers for your piping project? Send us your material grades, sizes, wall thicknesses or schedules, and quantities.
Direct Email: anzhiyuan@yhmadeinprc.com.cn
Required Inquiry Details: Fitting type (such as 90 deg LR Elbow), size/NPS, schedule/wall thickness, material grade (such as ASTM A234 WPB), and target order quantity.
Response Time: Technical specification verification and commercial quotations provided within 12 hours.

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