80-Inch API 5L X52 PSL2 Equal Tee Supplied for Saudi NEOM Project

Large-diameter pipeline fittings require more than simply meeting a size requirement. Material traceability, mechanical performance, welding quality, surface protection and coating compatibility all become important when the fitting is intended for a major infrastructure project.

Haihao Group recently supplied an 80-inch API 5L X52 PSL2 equal tee with reinforcement pad for a Saudi NEOM project. The tee has a 20.62 mm wall thickness, uses API 5L X52 PSL2 material, and is manufactured from plate raw material with a 7-seam welded construction according to the supplied order specification.

For this project, the fitting was also specified with 3PE external coating and FBE internal coating, providing corrosion protection for both the outside and inside surfaces.

80-Inch Equal Tee Specification

The large-diameter tee was designed for a pipeline application where the branch and run connections need to maintain consistent geometry and structural integrity. A reinforcement pad was incorporated into the tee design to meet the project’s specified configuration.

Product	Size	Wall Thickness	Material	Raw Material	Construction
Equal Tee with Reinforcement Pad	80″	20.62 mm	API 5L X52 PSL2	Plate	7 Seams

The combination of 80-inch diameter and 20.62 mm wall thickness makes this a substantial fabricated fitting. For large pipeline components, dimensional control is particularly important because even relatively small deviations can affect field fit-up and welding alignment.

API 5L X52 PSL2 Material for Large-Diameter Fittings

The selected API 5L X52 PSL2 material provides the material basis specified for this project. PSL2 requirements place greater emphasis on controlled chemical composition and verified mechanical properties than the basic PSL1 level. Current industry search results also show strong demand around the phrase “API 5L X52 PSL2” for line-pipe applications.

For this order, the raw material was plate, which was subsequently fabricated into the large-diameter tee. The supplied test data records both product chemical analysis and mechanical test results, providing traceability for the material used in production.

Chemical Composition — Product Analysis

The following values are transcribed from the supplied material test data. The first row shows the specified maximum values, followed by six product-analysis results.

Element	C	Mn	S	P	Si	Cr	Ni	Mo	Cu	V	Ti	Nb	B	CEpcm
Specified Max.	≤0.24	≤1.40	≤0.015	≤0.025	≤0.45	≤0.30	≤0.30	≤0.15	≤0.50	≤0.10	≤0.04	≤0.05	≤0.001	≤0.25
Product Analysis 1	0.068	1.32	0.0023	0.013	0.212	0.232	0.131	0.007	0.014	0.002	0.011	0.027	0.0004	0.16
Product Analysis 2	0.070	1.38	0.004	0.014	0.20	0.030	0.01	0.01	0.02	0.002	0.02	0.02	0.0005	0.16
Product Analysis 3	0.074	1.35	0.0019	0.015	0.209	0.234	0.131	0.008	0.014	0.002	0.015	0.029	0.0004	0.17
Product Analysis 4	0.070	1.34	0.004	0.011	0.20	0.03	0.02	0.003	0.01	0.002	0.02	0.02	0.0003	0.14
Product Analysis 5	0.072	1.33	0.0016	0.013	0.256	0.23	0.141	0.007	0.014	0.002	0.012	0.029	0.0004	0.16
Product Analysis 6	0.070	1.37	0.004	0.013	0.20	0.03	0.02	0.01	0.02	0.002	0.02	0.02	0.0004	0.16

Mechanical Test Results

The supplied test data records yield strength, tensile strength, elongation and hardness. Tensile testing is identified as ASTM A370 in the certificate data.

Test Item	Requirement	Test 1	Test 2	Test 3	Test 4	Test 5	Test 6
Yield Strength, Rp0.2 (MPa)	360–530	443	467	458	460	464	458
Tensile Strength, BM (MPa)	460–760	531	570	563	565	525	560
Tensile Strength, Transverse WM (MPa)	460-760	—	575	—	568	—	562
Elongation, E (%)	≥20	43	28	41	32	39	28
Hardness (HBW)	—	160/155/158	198/201/207	165/162/162	196/196/197	165/164/167	212/216/211

The recorded yield-strength results range from 443 to 467 MPa, while the reported base-metal tensile-strength results range from 525 to 570 MPa. The elongation values are between 28% and 43% in the supplied test records.

3PE External and FBE Internal Coating

For a large-diameter pipeline fitting, corrosion protection is an important part of the completed component rather than an afterthought.

This API 5L X52 PSL2 equal tee was supplied with:

• External 3PE coating
• Internal FBE coating
• 80-inch diameter
• 62 mm wall thickness
• Reinforcement pad
• Plate-based fabricated construction

The external 3PE system provides a protective barrier around the fitting, while the internal FBE coating protects the internal surface. Applying the specified coating systems to a large fabricated fitting requires careful surface preparation and coating control to ensure that the finished component is suitable for pipeline installation.

Quality Credentials for the Project

Haihao Group’s quality and certification capabilities include ABS, API, ISO, BV, CE and EAC certifications.

For large infrastructure projects such as the Saudi NEOM project, customers typically need more than a finished fitting. They also need documentation that supports material traceability, inspection and project quality requirements.

The combination of material test data, mechanical testing, fabrication control and coating services allows Haihao Group to supply large-diameter pipeline fittings as a more complete package.

Why Large-Diameter Fabricated Tees Require Careful Control

An 80-inch tee is significantly different from a standard small-diameter forged fitting. Fabrication involves large plate sections, multiple welded seams, branch geometry and reinforcement details.

For this reason, the manufacturing process needs to control:

• Plate material identification and traceability
• Chemical composition
• Mechanical properties
• Welded seam quality
• Tee dimensions and alignment
• Reinforcement pad fabrication
• Surface preparation
• External 3PE coating
• Internal FBE coating
• Final inspection and documentation

For the Saudi project, these requirements were integrated into the supply of the 80-inch API 5L X52 PSL2 equal tee, allowing the customer to receive a finished, coated component prepared for pipeline construction.

Haihao Group Supports Large Pipeline Projects

This 80-inch order reflects Haihao Group’s capability in manufacturing and supplying large-diameter API 5L X52 PSL2 fittings for demanding pipeline projects.

From plate-based fabrication and welded construction to reinforcement pads and internal/external coating, Haihao Group can coordinate multiple production stages according to project specifications.

If your project requires large-diameter tees, reducers, elbows or other fabricated pipeline fittings, send us your size, wall thickness, material grade, coating requirements and project specifications. Our engineering and sales teams can review the requirements and provide a project-specific quotation.