Carbon Steel Pipe Cross — Factory Direct Supplier | Huaxia-Steel

Huaxia-Steel supplies carbon steel pipe crosses (four-way fittings) in equal and reducing configurations, seamless and welded, from ½” to 48″ in SCH 10 through SCH 160, to ASTM A234 WPB, ASME B16.9, MSS SP-75, and EN 10253-2. Crosses split flow into four directions at a single node — the compact alternative to two tees where layout space, weld count, or pressure-drop design demands it.

Product Overview

A pipe cross is a four-outlet fitting with all branches perpendicular to each other, sharing a common center point. Equal crosses maintain one size on all four outlets; reducing crosses take a smaller size on one or both branch outlets. Production method follows size and schedule: seamless crosses are hot-formed from forged or extruded barrels, welded crosses are fabricated from plate with longitudinal and branch welds, and heavy-wall crosses for high-pressure manifolds are machined from solid forgings. Every fitting is beveled for butt welding, heat treated per grade requirements, and inspected for wall thickness, branch alignment, and surface integrity before dispatch.

Specifications

Parameter	Details
Size range	½” to 48″ (DN15–DN1200)
Configuration	Equal (all four outlets same size) or reducing (branch outlets smaller)
Schedule	SCH 10, 20, 40, 80, 120, 160; STD, XS, XXS
Materials	ASTM A234 WPB/WPC, A420 WPL6, A860 WPHY 42–70, S235/S355
Manufacturing	Seamless (hot formed), welded (plate formed), forged (machined)
Ends	Butt weld bevel 37.5° ± 2.5°; socket weld/threaded to B16.11 for ≤ 4″
Standards	ASME B16.9, MSS SP-75, EN 10253-2, GB/T 12459, GOST 17376
Surface	Black, shot blasted, pickled, or 3LPE coated ends per project

Reference Dimensions (Equal Crosses, ASME B16.9)

NPS	OD (mm)	Center-to-run A (mm, SCH 40 basis)	Approx. weight (kg, STD)
2″	60.3	51	2.2
4″	114.3	64	6.1
6″	168.3	76	12.6
8″	219.1	89	21.4
12″	323.9	114	45.7
16″	406.4	127	77.0
24″	609.6	152	164.0

Tolerances per ASME B16.9: outside diameter +1.6/−0.8 mm at NPS 6 and below (scales with size for larger fittings), center-to-end ±2 mm for small sizes up to ±5 mm above NPS 24, and minimum wall not less than 87.5% of nominal. Reducing crosses follow the dimensional rules of the largest outlet with branch dimensions per the reducing tables.

Grade Selection Guide

Service	Grade	Notes
General process piping	A234 WPB	-20°C to 425°C, the default carbon steel fitting
Low temperature	A420 WPL6	Impact tested to -46°C
High-yield pipelines	A860 WPHY 52/60/65	Matches API 5L X52–X65 pipe
Sour service	A234 WPB + NACE MR0175	Hardness ≤ 22 HRC, PWHT performed
Structural/architectural	S235JR / S355JO	EN 10253-2 dimensional system

Manufacturing Standards and Quality Assurance

Production runs under ISO 9001 with ASME B16.9 dimensional control. Chemical and mechanical testing follows the material specification on each heat; hot-formed seamless crosses receive normalizing where required by grade or schedule, and all fittings undergo end-bevel machining to the standard compound bevel. Inspection includes: ultrasonic wall thickness measurement at four quadrants per outlet, visual and magnetic particle (or penetrant) examination of hot-formed surfaces and weld seams on welded types, dimensional verification of center-to-end, out-of-roundness, and branch squareness, and hardness testing where project specifications demand. Certificates are issued to EN 10204 3.1, with 3.2 third-party witness (TUV, BV, SGS) available on request. Markings cover grade, size, schedule, heat number, and manufacturer’s mark.

Applications

• Manifold headers distributing flow to four parallel circuits
• Firewater and sprinkler ring networks with cross take-offs
• Compressor and pump station suction/discharge nodes
• Pig launcher/receiver piping assemblies
• Structural tube connections in space-frame construction

Packing and Shipping

Crosses are packed in plywood cases or steel-banded pallets with bevel protectors on every outlet, seaworthy export wrapping, and itemized packing lists mapped to heat numbers. Large-diameter welded crosses ship on cradles to protect branch alignment. We consolidate mixed fitting orders (elbows, tees, crosses, reducers) into single shipments to reduce freight cost and customs handling.