Table of Contents
- Introduction
- Chemical Composition
- Mechanical Properties
- Physical & Thermal Properties
- Equivalent Grades
- Welded Pipes Details
- Manufacturing Process
- Sizes & Dimensions
- Weight Chart
- Pressure Rating
- Types Available
- Applications
- Industries Served
- Grade Comparison
- Why BB Infras?
- Certifications & QC
- Export & Packaging
- Welded Pipes Marking
- Coating Options
- Testing Procedure
- Storage Guidelines
- Downloads
- Cities We Supply
- Countries We Export
- FAQ
- People Also Ask
- Related Products
| Material | Medium Carbon Steel |
| Grade | C45 / EN 10083-2 C45 / DIN 1.0503 |
| Standard | EN 10083-2 C45 / DIN 1.0503 |
| Pipe Type | Welded |
| Size Range | Rounds Ø 10–320 mm; flats, hexes, tubes |
| Schedule | SCH 10 – XXS (per ASME B36.10M) |
| Length | SRL (3–5 m) / DRL (6–12 m) / Cut-to-length |
| End Finish | Plain End (PE) / Bevel End (BE) / Threaded (TE) |
| Tensile Strength | 600–750 MPa |
| Yield Strength | 310 MPa min |
| MTC | EN 10204 3.1 Mill Test Certificate |
| MOQ | 100 kg (standard sizes) |
Quick Answers
C45 Welded Pipes – Overview
C45 is a European medium carbon steel with well-defined heat-treatment response. After quench and temper it achieves 700–850 MPa tensile, making it the standard choice for machine parts, shafts, keys and general mechanical engineering globally.
BB Infras stocks C45 Welded Pipes in rounds, hexagonals and profiles from leading Indian and European mills, regularly supplied to gear manufacturers, machine builders and automotive component suppliers with hardness and impact test reports on request. We supply C45 Welded Pipes in schedules SCH 10 through XXS, in lengths from 3 m single random to 6 m double random, with plain end, bevel end or threaded end as required. PE/BE/TE pipes are stocked for same-day dispatch.
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Request Quote WhatsAppChemical Composition of C45
The following table shows the chemical composition per EN 10083-2 C45 / DIN 1.0503.
| C | Mn | Si | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|
| 0.42–0.50 | 0.50–0.80 | ≤ 0.40 | ≤ 0.030 | ≤ 0.035 | ≤ 0.40 | ≤ 0.40 | ≤ 0.10 |
Mechanical Properties of C45
| Property | Value |
|---|---|
| Tensile Strength | 600–750 MPa |
| Yield Strength | 310 MPa min |
| Elongation | 14% min |
| Hardness | 179–229 HB (N) |
Physical & Thermal Properties
| Property | Value |
|---|---|
| Density | 7.84 g/cm³ |
| Melting Point | 1420–1460 °C |
| Thermal Conductivity | 48.5 W/m·K |
| Thermal Expansion | 11.0 × 10⁻⁶ /°C |
| Elastic Modulus | 210 GPa |
| Specific Heat | 461 J/kg·K |
| Electrical Resistivity | 0.170 μΩ·m |
Equivalent Grades of C45
| Standard Body | Equivalent Grade |
|---|---|
| EN/DIN | C45 / 1.0503 |
| AISI/SAE | 1045 |
| BS | EN8 / 080M46 |
| JIS | S45C |
| IS | C45 |
Welded Pipes – Product Details
Applicable Standards: ASTM A53, ASTM A672, API 5L, EN 10217, IS 3589
Manufacturing Process: UOE (U-press, O-press, Expand) or spiral forming of plates/coils, followed by SAW or GMAW seam welding and hydrostatic testing.
Heat Treatment: Normalise 820–860 °C; Harden 820–860 °C water/oil quench; Temper 540–680 °C.
C45 Welded Pipes – Manufacturing Process
Welded Pipes is produced using a controlled sequence of operations to achieve the dimensional and mechanical requirements of EN 10083-2 C45 / DIN 1.0503.
Internal & External
Per standard
C45 Welded Pipes – Sizes & Dimensions
Size range: Rounds Ø 10–320 mm; flats, hexes, tubes. The following dimensional data covers standard sizes. Non-standard sizes available on request.
| NPS | OD (mm) | Common WT (mm) | Max Pressure (approx) |
|---|---|---|---|
| 2" | 60.3 | 3.91 | PN 100 |
| 6" | 168.3 | 7.11 | PN 64 |
| 12" | 323.9 | 9.53 | PN 40 |
| 18" | 457.2 | 9.53 | PN 25 |
| 24" | 609.6 | 9.53 | PN 16 |
| 36" | 914.4 | 12.70 | PN 16 |
| 48" | 1219.2 | 14.27 | PN 10 |
C45 Welded Pipes – Weight Chart
Weight per metre (kg/m) for common sizes and schedules. Formula: W = 0.02466 × t × (OD − t) where t = wall thickness (mm), OD = outside diameter (mm).
| NPS | OD (mm) | SCH 40 WT (mm) | SCH 40 kg/m |
SCH 80 WT (mm) | SCH 80 kg/m |
SCH 160 WT (mm) | SCH 160 kg/m |
|---|---|---|---|---|---|---|---|
| ½" | 21.3 | 2.77 | 1.27 | 3.73 | 1.62 | 4.78 | 1.95 |
| ¾" | 26.7 | 2.87 | 1.69 | 3.91 | 2.20 | 5.56 | 2.90 |
| 1" | 33.4 | 3.38 | 2.50 | 4.55 | 3.24 | 6.35 | 4.24 |
| 1½" | 48.3 | 3.68 | 4.05 | 5.08 | 5.41 | 7.14 | 7.25 |
| 2" | 60.3 | 3.91 | 5.44 | 5.54 | 7.48 | 8.74 | 11.11 |
| 3" | 88.9 | 5.49 | 11.29 | 7.62 | 15.27 | 11.13 | 21.35 |
| 4" | 114.3 | 6.02 | 16.07 | 8.56 | 22.32 | 13.49 | 33.57 |
| 6" | 168.3 | 7.11 | 28.26 | 10.97 | 42.56 | 14.27 | 54.20 |
| 8" | 219.1 | 8.18 | 42.55 | 12.70 | 64.64 | 15.09 | 75.92 |
| 10" | 273.1 | 9.27 | 60.31 | 12.70 | 81.55 | 15.09 | 95.97 |
| 12" | 323.9 | 9.53 | 73.78 | 12.70 | 97.44 | 17.48 | 132.05 |
* Weights are approximate and calculated per ASME B36.10M. Actual weights may vary ±2% depending on mill tolerance.
C45 Welded Pipes – Pressure Rating
Allowable working pressure (bar) per ASME B31.3 at ambient temperature (38 °C). Pressure reduces at elevated temperature — consult ASME B31.3 Table A-1.
| NPS | OD (mm) | SCH 40 WT (mm) | SCH 40 Pressure (bar) |
SCH 80 WT (mm) | SCH 80 Pressure (bar) |
SCH 160 WT (mm) | SCH 160 Pressure (bar) |
|---|---|---|---|---|---|---|---|
| ½" | 21.3 | 2.77 | 387 | 3.73 | 521 | 4.78 | 668 |
| ¾" | 26.7 | 2.87 | 320 | 3.91 | 436 | 5.56 | 620 |
| 1" | 33.4 | 3.38 | 301 | 4.55 | 405 | 6.35 | 566 |
| 1½" | 48.3 | 3.68 | 227 | 5.08 | 313 | 7.14 | 440 |
| 2" | 60.3 | 3.91 | 193 | 5.54 | 273 | 8.74 | 431 |
| 3" | 88.9 | 5.49 | 184 | 7.62 | 255 | 11.13 | 373 |
| 4" | 114.3 | 6.02 | 157 | 8.56 | 223 | 13.49 | 351 |
| 6" | 168.3 | 7.11 | 126 | 10.97 | 194 | 14.27 | 252 |
| 8" | 219.1 | 8.18 | 111 | 12.70 | 173 | 15.09 | 205 |
| 10" | 273.1 | 9.27 | 101 | 12.70 | 138 | 15.09 | 164 |
| 12" | 323.9 | 9.53 | 88 | 12.70 | 117 | 17.48 | 161 |
* Pressures are indicative, calculated using Barlow's formula with 72% SMYS design factor. For engineering design, refer to ASME B31.3 / B31.1.
Types of C45 Welded Pipes
- ERW welded
- SAW / LSAW
- HSAW / Spiral welded
- Double-submerged arc welded (DSAW)
Applications of C45 Welded Pipes
Industries We Serve
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Stock available in Mumbai. Same-day quotation. Export documentation included.
Email Quote Call NowC45 – Grade Specification
| Standard | Category | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|---|
| EN 10083-2 C45 / DIN 1.0503 ✓ | Medium Carbon Steel | 600–750 MPa | 310 MPa min | 14% min |
| EN/DIN (C45 / 1.0503) | Equivalent | See equivalent grades table above | ||
| AISI/SAE (1045) | Equivalent | See equivalent grades table above | ||
| BS (EN8 / 080M46) | Equivalent | See equivalent grades table above | ||
| JIS (S45C) | Equivalent | See equivalent grades table above | ||
| IS (C45) | Equivalent | See equivalent grades table above | ||
* All values are minimum guaranteed per EN 10083-2 C45 / DIN 1.0503. Actual mill certificates may show higher values.
Why Buy C45 Welded Pipes from BB Infras?
| Ready Stock | Large inventory of C45 Welded Pipes 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 C45 Welded Pipes 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 C45 Welded Pipes 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
Welded Pipes Marking & Identification
Every C45 Welded Pipes supplied by BB Infras is marked per EN 10083-2 C45 / DIN 1.0503 and ASME marking requirements. Standard marking sequence:
- Manufacturer name / mark — BB Infras or mill of origin
- Specification — EN 10083-2 C45
- Grade — C45
- Type — E (ERW)
- Size & schedule — NPS × SCH or wall thickness
- Heat / lot number — for full traceability to MTC
- Length — actual pipe length in metres
- NDE symbol — if nondestructive examination was performed
Coating & Surface Finish Options
| Coating Type | Standard | Application | Lead Time |
|---|---|---|---|
| Black (Mill Finish) | Per standard | General service, indoor piping | In Stock |
| Hot-Dipped Galvanised (HDG) | ASTM A123 | Outdoor, water & plumbing | 3–5 days |
| Oil Coated | — | Export transit corrosion protection | In Stock |
| FBE (Fusion Bonded Epoxy) | CSA Z245.20 | Underground water/gas pipelines | 2–3 weeks |
| 3LPE (3-Layer Polyethylene) | DIN 30670 | Buried oil & gas pipelines | 2–3 weeks |
| Coal Tar Epoxy | AWWA C203 | Offshore & marine | 1–2 weeks |
Testing & Inspection Procedure
All C45 Welded Pipes 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 EN 10083-2 C45 Table 1 |
| 2 | Tensile & Yield Strength | ASTM E8 | ≥600–750 MPa / ≥310 MPa min |
| 3 | Elongation | ASTM E8 | ≥14% min |
| 4 | Hardness (HB) | ASTM E10 | Per standard max |
| 5 | Hydrostatic Test | EN 10083-2 C45 / ASME B31.3 | Leak-free at test pressure |
| 6 | Dimensional Inspection | ASME B36.10M | 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.
C45 Welded Pipes Supplier in India
BB Infras supplies C45 Welded Pipes 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.
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C45 Welded Pipes Exporter – Countries We Ship To
BB Infras exports C45 Welded Pipes 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.
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Frequently Asked Questions
Get the best price for C45 Welded Pipes
Talk to our sales team — available Mon–Sat, 9 AM – 7 PM IST. Same-day quotes.
Contact Us Today +91-9152677155People Also Ask
Is C45 pipe seamless or welded?
C45 is available in both seamless and welded (ERW, SAW) forms under EN 10083-2 C45 / DIN 1.0503. BB Infras stocks seamless Welded Pipes and welded variants. Seamless offers higher burst pressure and superior fatigue resistance.
What schedules are available for C45 Welded Pipes?
Per ASME B36.10M: SCH 10, 20, 30, 40 (Standard), 60, 80 (Extra Strong), 100, 120, 140, 160 and XXS. BB Infras stocks SCH 40 and SCH 80 in popular sizes for immediate dispatch.
Can C45 pipe be hot-dip galvanised?
Yes. Galvanising per ASTM A123 is available. Galvanised C45 pipe is suitable for water supply, plumbing and outdoor structural applications. Specify HDG at time of enquiry.
What is the tensile and yield strength of C45?
Per EN 10083-2 C45: minimum tensile is 600–750 MPa and minimum yield is 310 MPa min. Actual mill certificates typically show values 5–15% above the standard minimum.
What is the price of C45 Welded Pipes in India?
Prices vary by size, schedule, quantity and current steel market rates. Contact BB Infras for a firm quotation from our Mumbai stockyard.
Authoritative Standards Referenced
| Standard | Issuing Body | Scope |
|---|---|---|
| EN 10083-2 C45 / DIN 1.0503 | ASTM / ASME | Material specification for C45 |
| ASME B36.10M | ASME | Welded and seamless wrought steel pipe — dimensional standard |
| ASTM A530 | ASTM | General requirements for specialised carbon and alloy steel pipe |
| 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 |
