Table of Contents
- Introduction
- Chemical Composition
- Mechanical Properties
- Physical & Thermal Properties
- Equivalent Grades
- Cap Details
- Manufacturing Process
- Sizes & Dimensions
- Types Available
- Applications
- Industries Served
- Grade Comparison
- Why BB Infras?
- Certifications & QC
- Export & Packaging
- Cap Marking
- Coating Options
- Testing Procedure
- Storage Guidelines
- Downloads
- Cities We Supply
- Countries We Export
- FAQ
- People Also Ask
- Related Products
| Material | High-Strength Line Pipe |
| Grade | API 5L X52 / API 5L X52 / ISO 3183 L360 |
| Standard | API 5L X52 / ISO 3183 L360 |
| Type | Cap |
| Size Range | OD 21.3 mm – 1219 mm, wall 3 mm – 50 mm |
| Pressure Class | 2000# – 9000# (ASME B16.11) |
| Tensile Strength | 460 MPa min |
| Yield Strength | 359 MPa min |
| MTC | EN 10204 3.1 Mill Test Certificate |
| MOQ | 100 kg (standard sizes) |
Quick Answers
API 5L X52 Cap – Overview
API 5L X52 is a high-strength line pipe with a minimum yield of 359 MPa (52,000 psi). Its higher strength-to-weight ratio allows thinner wall sections, reducing material cost in long-distance oil and gas pipelines.
BB Infras is an established API 5L X52 Cap supplier to EPC contractors and pipeline operators across India and the Gulf region. We stock both PSL1 and PSL2 grades; sour-service documentation including HIC and SSC test reports is available on request for critical pipeline applications. All API 5L X52 Cap are manufactured to ASME B16.9 / MSS SP-75 with 100% dimensional inspection. Sizes range from ½” NB to 48” NB with wall thicknesses from SCH 10 through XXS.
Need a quote for API 5L X52 Cap?
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Request Quote WhatsAppChemical Composition of API 5L X52
The following table shows the chemical composition per API 5L X52 / ISO 3183 L360.
| C | Mn | P | S | Si | V+Nb+Ti |
|---|---|---|---|---|---|
| ≤ 0.26 | ≤ 1.40 | ≤ 0.030 | ≤ 0.030 | ≤ 0.45 | ≤ 0.15 |
Mechanical Properties of API 5L X52
| Property | Value |
|---|---|
| Tensile Strength | 460 MPa min |
| Yield Strength | 359 MPa min |
| Elongation | 21% min |
| SMYS | 52,000 psi / 359 MPa |
Physical & Thermal Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1420–1530 °C |
| Thermal Conductivity | 50 W/m·K |
| Thermal Expansion | 11.9 × 10⁻⁶ /°C |
| Elastic Modulus | 200 GPa |
| Specific Heat | 480 J/kg·K |
| Electrical Resistivity | 0.172 μΩ·m |
Equivalent Grades of API 5L X52
| Standard Body | Equivalent Grade |
|---|---|
| API | 5L X52 |
| EN ISO 3183 | L360 |
| DIN | StE360.7 TM |
| ASTM approx. | A572 Gr.50 |
Cap – Product Details
Applicable Standards: ASME B16.9, EN 10253-2, MSS SP-43
Manufacturing Process: Deep drawn from plate or hot-pressed from pipe sections; profile per ASME B16.9.
Heat Treatment: TMCP or normalise+temper for PSL2.
API 5L X52 Cap – Manufacturing Process
Cap is produced using a controlled sequence of operations to achieve the dimensional and mechanical requirements of API 5L X52 / ISO 3183 L360.
900–1100 °C
Per ASME B16.9
30° per ASME B16.25
API 5L X52 Cap – Sizes & Dimensions
Size range: OD 21.3 mm – 1219 mm, wall 3 mm – 50 mm. The following dimensional data covers standard sizes. Non-standard sizes available on request.
| NPS | OD (mm) | Length (mm) |
|---|---|---|
| ½" | 21.3 | 25 |
| 1" | 33.4 | 29 |
| 2" | 60.3 | 41 |
| 4" | 114.3 | 60 |
| 6" | 168.3 | 73 |
| 8" | 219.1 | 83 |
| 12" | 323.9 | 117 |
Types of API 5L X52 Cap
- Round-end (dome) Cap
- Flat Cap
- Ellipsoidal Cap
- Threaded Cap (ASME B16.11)
Applications of API 5L X52 Cap
Industries We Serve
Ready to order API 5L X52 Cap?
Stock available in Mumbai. Same-day quotation. Export documentation included.
Email Quote Call NowAPI 5L X52 – Grade Specification
| Standard | Category | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|---|
| API 5L X52 / ISO 3183 L360 ✓ | High-Strength Line Pipe | 460 MPa min | 359 MPa min | 21% min |
| API (5L X52) | Equivalent | See equivalent grades table above | ||
| EN ISO 3183 (L360) | Equivalent | See equivalent grades table above | ||
| DIN (StE360.7 TM) | Equivalent | See equivalent grades table above | ||
| ASTM approx. (A572 Gr.50) | Equivalent | See equivalent grades table above | ||
* All values are minimum guaranteed per API 5L X52 / ISO 3183 L360. Actual mill certificates may show higher values.
Why Buy API 5L X52 Cap from BB Infras?
| Ready Stock | Large inventory of API 5L X52 Cap in popular sizes maintained in our Mumbai warehouse for immediate dispatch. |
| Certified Material | All material supplied with EN 10204 3.1 Mill Test Certificates from NABL-accredited labs. TPI by SGS, BV, TUV on request. |
| Worldwide Export | We export API 5L X52 Cap to 80+ countries with complete export documentation — COO, packing list, B/L, fumigation certificates. |
| Competitive Pricing | Direct mill sourcing and bulk buying ensures competitive prices. No middlemen. Transparent pricing with no hidden charges. |
| Fast Delivery | Standard sizes dispatched within 3–5 business days. Custom sizes within 3–4 weeks. Urgent orders accommodated. |
| Value-Added Services | Cut-to-length, bevelling, threading, galvanising, painting, marking & stencilling available in-house. |
| Technical Support | Our metallurgical team assists with grade selection, standard interpretation, and material substitution queries. |
| MSME Registered | Registered MSME supplier. Eligible for GeM portal procurement and government tenders. |
Certifications & Quality Inspection
Every API 5L X52 Cap supplied by BB Infras undergoes the following quality controls:
Quality Inspection Checklist
- Chemical composition analysis (OES / wet analysis)
- Mechanical testing: tensile, yield, elongation, impact
- Dimensional inspection per applicable ASME standard
- Visual and surface finish inspection
- Hydrostatic or pneumatic pressure testing
- Non-Destructive Testing: UT, RT, MT, PT on request
- Positive Material Identification (PMI) on request
Export Packaging & MOQ
- Minimum Order Quantity (MOQ): 100 kg or 1 piece (standard sizes); 500 kg for custom sizes
- Packing for Pipes/Tubes: Bundled with steel strapping, plastic end caps, moisture-proof wrapping
- Packing for Fittings/Flanges: Wooden box / wooden pallet, plywood case for heavy items
- Sea Freight: FCL / LCL container, fumigation certificate provided
- Air Freight: Available for urgent requirements
- Documents: Commercial Invoice, Packing List, Certificate of Origin, MTC, Bill of Lading, Insurance Certificate
- Marking: Heat number, grade, size, schedule, standard per ASTM A5.40 / ASME marking requirements
Cap Marking & Identification
Every API 5L X52 Cap supplied by BB Infras is marked per API 5L X52 / ISO 3183 L360 and ASME marking requirements. Standard marking sequence:
- Manufacturer name / mark
- Material specification — API 5L X52
- Product type — Cap
- Wall thickness / Schedule
- Heat / lot number — for MTC traceability
Coating & Surface Finish Options
| Coating Type | Standard | Application | Lead Time |
|---|---|---|---|
| Black (Mill Finish) | Per standard | General process service | In Stock |
| Yellow Zinc Chromate Primer | — | Corrosion protection in transit | In Stock |
| Hot-Dipped Galvanised (HDG) | ASTM A123 | Plumbing & utility service | 3–5 days |
| Two-Coat Epoxy | — | Chemical & offshore service | 1–2 weeks |
Testing & Inspection Procedure
All API 5L X52 Cap supplied by BB Infras undergo a multi-stage inspection and testing process before dispatch:
| # | Test / Inspection | Standard / Method | Acceptance |
|---|---|---|---|
| 1 | Chemical Composition (OES) | ASTM E415 | Per API 5L X52 Table 1 |
| 2 | Tensile & Yield Strength | ASTM E8 | ≥460 MPa min / ≥359 MPa min |
| 3 | Elongation | ASTM E8 | ≥21% min |
| 4 | Hardness (HB) | ASTM E10 | Per standard max |
| 5 | Hydrostatic Test | API 5L X52 / ASME B31.3 | Leak-free at test pressure |
| 6 | Dimensional Inspection | ASME B16.9 / B16.11 | Within tolerance |
| 7 | Visual & Surface | ASTM A530 / MSS SP-55 | Free from defects |
| 8 | Ultrasonic Testing (UT) | ASTM E213 (on request) | No sub-surface defects |
| 9 | PMI (XRF) | ASTM E1476 (on request) | Grade confirmation |
Storage & Handling Guidelines
- Store on wooden dunnage or pipe racks — never directly on concrete to avoid moisture-induced corrosion.
- Stack with appropriate separators; observe safe stack heights to prevent deformation.
- Apply plastic end caps or plugs to all open ends to prevent ingress of moisture, dust and insects.
- Keep material dry and ventilated; store under cover in humid or coastal climates.
- Use nylon slings or padded lifting hooks — never bare wire rope directly on surface.
- For long-term storage (>6 months), re-apply protective oil coating or wrap with VCI (Vapour Corrosion Inhibitor) film.
- Identify items with heat number tags throughout storage for full MTC traceability.
Downloads & Technical Resources
Request product documentation from our technical team. Available on enquiry:
Contact our technical team with your enquiry details and we will share the relevant document within 24 hours.
API 5L X52 Cap Supplier in India
BB Infras supplies API 5L X52 Cap to customers across India from our Mumbai stockyard. We serve all major industrial hubs — refineries in Jamnagar and Haldia, petrochemical clusters in Dahej and Panipat, shipyards in Kochi and Visakhapatnam, and fabrication workshops across Pune, Rajkot, Surat and Coimbatore — with same-day quotation and fast dispatch.
View all cities we supply ▾
API 5L X52 Cap Exporter – Countries We Ship To
BB Infras exports API 5L X52 Cap to 80+ countries with complete export documentation — Certificate of Origin, Material Test Certificate, Packing List, Bill of Lading and Fumigation Certificate. We are a trusted exporter to UAE, Saudi Arabia, Qatar, Oman and Kuwait in the Middle East; to Singapore, Malaysia, Indonesia and Vietnam in Southeast Asia; to South Africa, Nigeria and Kenya in Africa; and to the USA, UK, Germany and Netherlands in Europe and North America.
View all export countries ▾
Frequently Asked Questions
Get the best price for API 5L X52 Cap
Talk to our sales team — available Mon–Sat, 9 AM – 7 PM IST. Same-day quotes.
Contact Us Today +91-9152677155People Also Ask
What standard does API 5L X52 Cap conform to?
API 5L X52 Cap conforms to ASME B16.9, EN 10253-2, MSS SP-43. Dimensional inspection is carried out per these standards before dispatch.
What end connections are available for API 5L X52 Cap?
Available with buttweld (BW) per ASME B16.25, socket weld (SW) and threaded (NPT/BSP) ends. Specify end connection at enquiry.
What is the tensile and yield strength of API 5L X52?
Per API 5L X52: minimum tensile is 460 MPa min and minimum yield is 359 MPa min.
Do you supply API 5L X52 Cap with MTC?
Yes. EN 10204 3.1 Mill Test Certificates supplied with all products. TPI by SGS, TUV, BV or Lloyd's available on request.
What is the price of API 5L X52 Cap in India?
Prices vary by size, schedule, quantity and current market rates. Contact BB Infras for a firm quotation from our Mumbai stockyard.
Authoritative Standards Referenced
| Standard | Issuing Body | Scope |
|---|---|---|
| API 5L X52 / ISO 3183 L360 | ASTM / ASME | Material specification for API 5L X52 |
| ASME B16.9 | ASME | Factory-made wrought buttweld fittings |
| MSS SP-75 | MSS | Specification for high-test wrought buttweld fittings |
| EN 10204:2004 | CEN | Metallic products — types of inspection documents (3.1 MTC) |
| NACE MR0175 / ISO 15156 | NACE/ISO | Materials for H₂S service in oil and gas production |
