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ASME B16.9 Cross - Equal Carbon Steel Pipe Fitting for Four-Way Distribution in Piping Manifolds

Equal Cross - same diameter on all four ends for symmetrical four-way flow distribution

ASME B16.9 Cross - Schedule 40 / 80 / 160 wall thickness options for matching pipe pressure ratings

ASME B16.9 cross dimensional chart - center-to-end dimensions for equal/reducing crosses

Seamless Cross - no weld seam for high-pressure and critical service applications

Cross

Keywords: Equal Cross, Unequal Cross, Cross Pipe, Socket Cross, Short Cross, Forging Cross
Size: NPS from 1/2'' to 36'', DN from 15 to 900, WT: 2- 80 mm, SCH 40/80/XXS
Standard & Grade: DIN/3A/SMS/IDF/IOS/RJT
Material: Carbon Steel --- ASTM A234 WPB/WPC, ANSI B 16.9, ASTM A105/A106/A53；API 5L GR.B/A671-CC-70/A515-50/A135-A/A179-C;Stainless Steel --- ASTM 403 304/304L,316/316L,316Ti,321,317L,310S ;Alloy Steel --- ASTM A234 WP1/5/9/11/12/22/91
Ends: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends
Delivery: BKS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)
Packing: Packed in Wood Cabins/ Wood Tray
Usage: Oil And Gas Transmissions; Petroleum And Oil Refining; Water Treatment Systems; Chemical Industries; Sanitary Tubing; Power Stations; Machines And Equipment; Heat Exchange


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Pipe cross comes in equal cross and reducing cross, and the raw materials of which include a wide range, such as carbon steel, alloy steel, stainless steel, low-temperature steel, and high-performance steel, etc. Our pipe crosses feature high strength, good toughness, and resistance to corrosion, and they are widely used in many industries, such as petroleum, power generation, natural gas, chemical, shipbuilding, paper making, etc.

Pipe Cross Types

Equal Cross

The equal pipe cross is one type of pipe cross; just like an equal tee, the equal cross means all 4 ends of the cross are in the same diameter. The pipe cross, like a road cross, is the joint of 4 pipes. Receiving the pressure from the 4 pipes, the weld joint between the pipes and cross must be very strong.

Reducing cross

The Reducing Cross Pipe Fitting, also called an unequal pipe cross, is the pipe cross that has four branch ends that are not in the same diameters.

Outside Diameter: Seamless Cross Fitting ( 1/2″～24″), ERW / Welded / Fabricated Cross Fitting (1/2″～48″)

Type: Seamless, Welded, Equal Cross, Reducing Cross

Wall Thickness: 3mm – 40mm / SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS

Value Added Services: Hot Dipped Galvanizing, Epoxy & FBE Coating, Electro Polish, Sand Blasting, Threading, Soldering

Production Grades: Stainless Steel, Alloy Steel, Duplex, Nickel Alloys, Low temperature Steel, Carbon Steel, Couple Nickel

Manufacturing Standards

ASME: ANSI B16.9, ANSI B16.28, MSS-SP-43

DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011

EN: EN10253-1, EN10253-2

ASTM A403 – ASME SA403 – Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings

ASME B16.9 – Factory-Made Wrought Fittings Butt welding

ASME B16.25 – Butt welding Ends ASME B16.28 – Wrought Steel Short Radius Elbows and Butt welding Returns

MSS SP-43 – Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications

Pipe Cross Material

Stainless Steel Pipe Cross; ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L

Carbon Steel Pipe Cross: ASTM A 234 WPB, WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.

Low Temperature Carbon Steel Pipe Cross: ASTM A420 WPL3, A420 WPL6

Alloy Steel Pipe Cross: ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP

Duplex Pipe Cross: ASTM A 815, ASME SA 815 UNS NO S31803, S32205. Werkstoff No. 1.4462

Nickel Alloy Pipe Cross: ASTM / ASME SB 336 UNS 2200 ( NICKEL 200 ), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400 ), UNS 8020 ( ALLOY 20 / 20 CB 3, UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 ( INCONEL 601 ), UNS 6625 (INCONEL 625), UNS 10276 ( HASTELLOY C 276 )

Q: What is a Steel Cross, and how does it differ from a Tee?

A: A Steel Cross (also known as a 4-Way Cross) is a pipe fitting with four openings at right angles to each other. While a Tee connects three pipes, a Cross is used to connect four pipes at a single junction, allowing flow to split in three directions or merge from three directions. Because of the complex stress distribution at the intersection, Crosses require thicker walls or higher-grade materials compared to standard Tees of the same size.

Q: What are the available types of Steel Crosses?
A: We supply two main types of crosses to suit different pipeline designs:

Equal Cross: All four branches have the exact same diameter. It is ideal for symmetrical piping layouts, such as fire sprinkler systems or structural grids.
Reducing Cross: One or more branches have a smaller diameter than the main run. This is used when connecting main lines to smaller branch lines or equipment without needing additional reducers.

Q: What connection types and sizes do you offer?
A: We manufacture crosses in various connection types to meet different pressure and installation requirements:

Butt Weld (BW) Cross: Features beveled ends for high-pressure, leak-proof welding. Ideal for critical oil, gas, and chemical pipelines.
Socket Weld (SW) & Threaded (THD) Cross: Designed for small-diameter, low-to-medium pressure systems (e.g., water, air, plumbing) where welding is not required.
Size Range: We cover sizes from 1/2" to 24" (DN15 to DN600), with wall thicknesses ranging from SCH5S up to SCH160 and XXS.

Q: What materials and steel grades can you supply?
A: We manufacture crosses in Carbon Steel, Stainless Steel, and Alloy Steel. Common grades include:

Carbon Steel: ASTM A234 WPB, WPC
Stainless Steel: ASTM A403 WP304/304L, WP316/316L, WP321
Alloy/Low-Temp: ASTM A234 WP11/WP22, A420 WPL6
If your project involves highly corrosive media or extreme temperatures, our engineering team can recommend the optimal material grade.

Q: How do you ensure the quality and structural integrity of the crosses?
A: Quality is non-negotiable. Every cross undergoes rigorous testing, including chemical composition analysis, mechanical property tests, and 100% Non-Destructive Testing (NDT) such as Ultrasonic Testing (UT) or Radiographic Testing (RT) to detect internal flaws at the intersection. Every shipment includes a comprehensive Mill Test Certificate (MTC), and we fully welcome third-party inspections (SGS, BV, TUV).

Related Products

ASME B16.9 Tee - Equal Carbon Steel Pipe Fitting for 90° Branch Connection in Piping Systems

Tee

Elbow

Bend

Reducer

ASME B16.5 Flange - Carbon Steel Weld Neck Pipe Flange with RF (Raised Face) for Piping Connection

Flanges

Pattern	Weld	Seamless
Nominal size	1/2”-48” (DN15-DN1200)	1/2”-20” (DN15-DN500)
Wall thickness	2~100mm	2~50mm
Bend radius	SCH5S-SCH160 ,XXS	SCH5-SCH160
Type	cross/reducing cross	cross/reducing cross

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