Alloy Steel Pipes and Tubes stockist
AL LIWARA General Trading LLC is a leading Alloy Steel Pipes and Tubes stockist, offering high-performance piping solutions to industries worldwide. Alloy steel pipes and tubes are designed to withstand extreme pressure, temperature, and corrosive conditions, making them essential for critical applications in oil & gas, refineries, power plants, petrochemicals, and heavy engineering. With an extensive inventory of seamless and welded products, AL LIWARA ensures consistent availability and reliable quality.
As a trusted Alloy Steel Pipes and Tubes stockist in UAE, the company provides a wide selection of grades, sizes, and specifications that conform to ASTM, ASME, and international standards. These products are known for their toughness, durability, and resistance to wear, making them suitable for industries where high mechanical strength and long service life are crucial. AL LIWARA sources its stock from globally recognized mills to guarantee superior performance and compliance.
AL LIWARA General Trading LLC has built a strong export presence in the Middle East, supplying Alloy Steel Pipes and Tubes to the United Arab Emirates, Saudi Arabia, Kuwait, Qatar, Bahrain, and Oman. Beyond the Gulf, the company exports to key global markets including the USA, Mexico, Canada, Egypt, Algeria, Nigeria, South Africa, Kenya, and Tanzania. With an efficient supply chain, AL LIWARA ensures prompt deliveries that meet project deadlines.
In Europe, the company exports high-quality Alloy Steel Pipes and Tubes to Spain, Germany, France, Italy, the United Kingdom, Netherlands, Belgium, Poland, and Portugal. Additionally, AL LIWARA serves markets in Asia and Oceania, including Turkey, Jordan, Yemen, Malaysia, Singapore, Bangladesh, Sri Lanka, Australia, Iran, and Russia. This extensive global reach makes the company a preferred partner for industries requiring consistent and dependable supply.
1. General Specification — Standards & Product Types
| Property | Details / Standards |
|---|---|
| Product | Alloy Steel Pipes & Tubes — Seamless, Welded, ERW, Fabricated |
| Common Alloy Families | Chromium-molybdenum (Cr–Mo), Low-alloy steels, High-alloy steels (as per grade) |
| Typical Standards (ASTM / ASME / EN / API) | ASTM A335 (seamless ferritic alloy-steel pipe), ASME SA335, ASTM A213 (seamless ferritic & austenitic heat-exchanger tubes), ASTM A182 (for fittings/forged components), EN 10216-2 (seamless steel tubes for pressure purposes), API 5L (linepipe variants where applicable) |
| Typical Grades | P1, P11, P22, P5, P9, P91, 10CrMo9-10, 13CrMo4-5 equivalents, and other specified alloy grades |
| End Finishes | Plain end, bevelled, threaded, custom flanged ends, welded ends |
| Surface | Mill finish, painted, black/primer coated, PWHT (post-weld heat treatment) as required |
| Testing & Certification | EN 10204 3.1 / 3.2 MTC, Hydrostatic test, RT/UT/MT, PMI, hardness & dimensional inspection, third-party inspection (SGS, Lloyd's, TPI) on request |
2. Chemical Composition — Typical Ranges (wt. %)
| Grade (common) | C | Si | Mn | P | S | Cr | Mo | Other (typical) |
|---|---|---|---|---|---|---|---|---|
| P1 (low alloy) | ≤0.12–0.20 | ≤0.4 | ≤0.6–1.1 | ≤0.035 | ≤0.035 | ≈0.25–1.0 | ≈0.15–0.25 | — |
| P11 (≈1.25Cr-0.5Mo) | ~0.08–0.15 | ≤0.4 | ~0.40–1.00 | ≤0.035 | ≤0.035 | ~1.0–1.6 | ~0.45–0.65 | V,Nb sometimes microalloyed |
| P22 (≈2.25Cr-1.0Mo) | ~0.05–0.15 | ≤0.40 | ~0.40–1.00 | ≤0.035 | ≤0.035 | ~2.0–2.5 | ~0.8–1.1 | Nb, V as needed |
| P5 / P9 (≈0.5–2Cr-0.5Mo variants) | ~0.10–0.20 | ≤0.4 | ~0.4–1.0 | ≤0.035 | ≤0.035 | ~0.5–2.0 | ~0.4–0.6 | — |
| P91 (9Cr-1Mo, creep resistant) | ~0.08–0.12 | ≤0.50 | ~0.40–1.00 | ≤0.02–0.03 | ≤0.01–0.02 | ~8.0–10.5 | ~0.85–1.10 | V, Nb, N (microalloying for creep strength) |
The above are **typical composition ranges** for common alloy pipe grades. Exact element percentages vary by standard/producer. Always verify with the MTC.
3. Mechanical Properties (Typical / normalized or PWHT condition)
| Grade | Min. Yield Strength (MPa) | Min. Tensile Strength (MPa) | Typical Elongation (%) | Hardness (HB / max) |
|---|---|---|---|---|
| P1 / general low-alloy | ~150–240 | ~310–460 | ~20–30 | ~200–240 |
| P11 (1.25Cr-0.5Mo) | ~200–260 | ~360–520 | ~18–25 | ~220–250 |
| P22 (2.25Cr-1Mo) | ~230–300 | ~420–560 | ~16–25 | ~230–260 |
| P5 / P9 | ~210–300 | ~400–540 | ~16–24 | ~220–260 |
| P91 (9Cr-1Mo, creep grade) | ~380–520 | ~550–750 | ~12–22 | ~200–300 (depending on heat treatment) |
Mechanical requirements depend on heat treatment (normalized, tempered, PWHT). Use the MTC and standard specification clauses for contractual acceptance.
4. Dimension Chart — Selected NPS / OD / Wall Thickness (representative)
| NPS (inch) | Outside Diameter (mm) | Wall (mm) — Sch 10 | Wall (mm) — Sch 40 | Wall (mm) — Sch 80 |
|---|---|---|---|---|
| 1/2" | 21.3 | 2.11 | 2.77 | 3.91 |
| 3/4" | 26.7 | 2.77 | 2.87 | 3.73 |
| 1" | 33.4 | 2.77 | 3.38 | 4.55 |
| 2" | 60.3 | 2.77 | 3.91 | 6.02 |
| 3" | 88.9 | 3.25 | 5.49 | 7.62 |
| 4" | 114.3 | 3.68 | 6.02 | 8.56 |
| 6" | 168.3 | 4.78 | 7.11 | 10.97 |
| 8" | 219.1 | 6.02 | 8.18 | 12.70 |
Many alloy pipe orders use custom wall thickness or seamless metric sizes; confirm schedule or exact mm thickness in the purchase order.
5. Weight Chart — Mass per metre (kg/m) — approximate (density ≈ 7.85 g/cm³)
| NPS | OD (mm) | Sch 40 t (mm) | Weight (kg/m) — Sch 40 | Sch 80 t (mm) | Weight (kg/m) — Sch 80 |
|---|---|---|---|---|---|
| 1/2" | 21.3 | 2.77 | 1.266 | 3.91 | 1.677 |
| 3/4" | 26.7 | 2.87 | 1.687 | 3.73 | 2.113 |
| 1" | 33.4 | 3.38 | 2.502 | 4.55 | 3.237 |
| 2" | 60.3 | 3.91 | 5.437 | 6.02 | 8.059 |
| 3" | 88.9 | 5.49 | 11.293 | 7.62 | 15.274 |
| 4" | 114.3 | 6.02 | 16.075 | 8.56 | 22.322 |
| 6" | 168.3 | 7.11 | 28.264 | 10.97 | 42.564 |
| 8" | 219.1 | 8.18 | 42.549 | 12.70 | 64.645 |
Weights are approximate and calculated using circular geometry with density ≈ 7.85 g/cm³. Roundings applied. Use exact OD and wall (mm) and mill tolerances for project weight calculations.
6. Equivalent Grades — Guidance (approximate)
| Common / ASTM (typical) | Common Name / Alloy | Notes / Typical Application |
|---|---|---|
| ASTM A335 P1 | Low-alloy ferritic | Low-temperature or general alloy service |
| ASTM A335 P11 | ~1.25%Cr – 0.5%Mo | High-temperature steam piping, heaters |
| ASTM A335 P22 | ~2.25%Cr – 1.0%Mo | Boiler tubes, superheater and reheater piping |
| ASTM A335 P5 / P9 | Cr–Mo family (intermediate) | High temperature service, often in refineries |
| ASTM A335 P91 | ~9%Cr – 1%Mo (creep-resistant) | Advanced power plant applications (high temp & creep service) |
In Europe, AL LIWARA serves industries in Spain, Germany, France, Italy, the United Kingdom, Netherlands, Belgium, Poland, and Portugal. The company also supports clients across Asia and Oceania, including Turkey, Jordan, Yemen, Malaysia, Singapore, Bangladesh, Sri Lanka, Australia, Iran, and Russia. By covering diverse markets, AL LIWARA has established itself as a reliable Alloy Steel Pipes and Tubes stockist with a global reach.
What makes AL LIWARA stand out is its customer-focused approach. The company not only offers premium alloy steel products but also provides technical support, mill test certifications, and third-party inspection services. This helps clients achieve full confidence in their purchases, ensuring that the materials delivered match exact specifications and project requirements.
With years of expertise in steel trading, AL LIWARA General Trading LLC continues to strengthen its reputation as a preferred Alloy Steel Pipes and Tubes stockist. Its products are widely used in pipelines, boilers, heat exchangers, structural applications, and process industries. By combining quality materials with professional service, the company remains a trusted partner for industries across the globe.
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