API 5L X52 PSL-2 Plate-Fabricated Tees: Material and Mechanical Test Data

For a Saudi NEOM project, Haihao Group supplied X52 PSL-2 fittings manufactured from API 5L X52 PSL-2-W plate. The order includes large equal and reduced tees with reinforcement pads.

The supplied products reach 80 inches in diameter, with wall thicknesses up to 20.62 mm.

Fitting Specifications

Product	Size	Wall Thickness	Material	Raw Material	Surface Protection
Equal Tee with Reinforcement Pad	80″	20.62 mm	API 5L X52 PSL-2-W	Plate	3PE / FBE
Reduced Tee with Complete Reinforcement Pad	80″ × 48″	20.62 mm / 15.88 mm	API 5L X52 PSL-2-W	Plate	3PE / FBE
Reduced Tee with Complete Reinforcement Pad	72″ × 48″	19.05 mm / 15.88 mm	API 5L X52 PSL-2-W	Plate	3PE / FBE

The raw material is identified in the project data as plate, rather than seamless pipe. This is an important manufacturing detail for customers evaluating large-diameter fabricated fittings.

Hebei Haihao Group undertakes Saudi Arabia’s NEOM project 80 inch pipe fittings with external 3PE and internal FBE coating

Chemical Composition of the X52 Material

The supplied product analysis records the following values:

C	Mn	S	P	Si	Cr	Ni	Mo	Cu	V	Ti	Nb	B	CE_pcm
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
0.070	1.38	0.004	0.014	0.200	0.030	0.010	0.010	0.020	0.002	0.020	0.020	0.0005	0.16
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
0.070	1.34	0.004	0.011	0.200	0.030	0.020	0.003	0.010	0.002	0.020	0.020	0.0003	0.14
0.072	1.33	0.0016	0.013	0.256	0.230	0.141	0.007	0.014	0.002	0.012	0.029	0.0004	0.16
0.070	1.37	0.004	0.013	0.200	0.030	0.020	0.010	0.020	0.002	0.020	0.020	0.0004	0.16

The specification limits included in the supplied document are:

C ≤0.24 | Mn ≤1.40 | S ≤0.015 | P ≤0.025 | Si ≤0.45 | Cr ≤0.30 | Ni ≤0.30 | Mo ≤0.15 | Cu ≤0.50 | V ≤0.10 | Ti ≤0.04 | Nb ≤0.05 | B ≤0.001 | CEpcm ≤0.25

Mechanical Test Data

The mechanical test section is identified as ASTM A370 in the supplied record.

Test	Y.S. Rp0.2 (MPa)	T.S. BM (MPa)	T.S. Transverse WM (MPa)	Elongation (%)	Hardness (HBW)
Test 1	443 / 467	531 / 570	— / 575	43 / 28	160/155/158 / 198/201/207
Test 2	458 / 460	563 / 565	— / 568	41 / 32	165/162/162 / 196/196/197
Test 3	464 / 458	525 / 560	— / 562	39 / 28	165/164/167 / 212/216/211

The test record gives reference values of 360–530 MPa for yield strength, 460–760 MPa for tensile strength and ≥20% elongation.

Large-Diameter Fabrication from Plate

The 80-inch equal tee and reduced tees are identified as fittings produced from plate raw material. This type of large-diameter fabrication requires controlled forming and welding operations, especially around the branch area.

The reinforcement-pad design is used on all three listed configurations:

80″ equal tee
80″ × 48″ reduced tee
72″ × 48″ reduced tee

The wall thickness varies according to the fitting configuration, with the largest listed thickness being 20.62 mm.

Surface Protection

The completed X52 PSL-2 fittings are specified with:

External 3PE coating
Internal FBE lining

This provides separate external and internal protection for the finished pipeline component.

Certifications and Project Supply

Haihao Group holds ABS, API, ISO, BV, CE and EAC certifications and supplies pipeline products for international projects.

This Saudi NEOM order combines several requirements in one product: large diameter, reinforced branch design, API 5L X52 PSL-2-W plate, documented chemical and mechanical properties, and 3PE/FBE protection.

For engineering companies, EPC contractors and pipeline distributors requiring X52 PSL-2 fittings, Haihao Group can review project drawings and technical specifications and provide customized manufacturing solutions.