GI Jumper exporter
Last Updated: July 2026
Quick Answer
GI Jumper is a hot-dip galvanized carbon steel pipe jumper used to connect valves and equipment in general industrial, utility, and plumbing piping systems. Manufactured to ASTM A53 and IS 1239.
GI Jumper exporter provides a cost-effective jumper solution for general industrial and utility piping systems where full stainless steel corrosion resistance is not required. Manufactured from hot-dip galvanized mild steel pipe, these jumper assemblies connect valves, gauges, and equipment in water lines, low-pressure air lines, and general plumbing and utility installations.
GI jumpers are made from carbon steel pipe conforming to ASTM A53 Grade B or IS 1239, hot-dip galvanized with a zinc coating of at least 350 g/m² to protect the base steel from atmospheric corrosion. This combination gives GI jumpers good mechanical strength at a significantly lower cost than stainless steel alternatives, making them a practical choice for non-critical, non-corrosive service.
Manufactured to ASTM A53 and IS 1239 with galvanizing per BS EN ISO 1461, GI jumpers are available with threaded (NPT/BSP) ends for straightforward integration into standard pipe fitting systems used in general industrial, plumbing, and utility applications.
International buyers across the Middle East, Europe, and North America source GI Jumper from India for its combination of factory pricing, consistent quality, and export documentation support.
Choosing an experienced Indian manufacturer for GI Jumper gives buyers worldwide access to competitive pricing, ready stock, and technical support without a trading intermediary.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why GI Jumper Is Preferred by Global Buyers
- ✔ Factory Pricing: Direct manufacturer rates with bulk stock
- ✔ Certified Quality: ISO & 3rd-party tested, EN 10204 certified
- ✔ Export-Ready: Sea-worthy packaging for on-time delivery
- ✔ Fast RFQs: Quick quotes for custom sizes & quantities
- ✔ Traceability: 100% heat number tracking from raw material to finished product
Trusted by industries like oil & gas, petrochemicals, power, marine, and heavy engineering.
- Manufacturing Capacity: 500 MT / Month
- Export Experience: 15+ Years
- Countries Served: 50+
- Annual Export Volume: 5,500 MT
Table of Contents
- 1. What is GI Jumper
- 2. How to Choose the Right Manufacturer
- 3.Comparison of GI Jumper Suppliers
- 4. Why Global Buyers Source from Jainam Ferro Alloys
- 5. Features
- 6. Technical Overview
- 7. Specifications
- 8. Available Grades
- 9. Available Sizes
- 10. Chemical Properties
- 11. Mechanical Properties
- 12. Physical & Thermal Properties
- 13. Electrical Resistivity
- 14. Equivalent Grades
- 15. Manufacturing Process & Heat Treatment
- 16. Various Types
- 17. Applications & Uses
- 18. Industries We Serve
- 19. Latest Price List
- 20. MOQ & Payment Terms
- 21. Export Packaging & Shipping
- 22. Cities We Supply in India
- 23. Countries We Export Worldwide
- 24. Our Certifications
- 25. Quality Inspection & Testing
- 26. Our Other Product Types
- 27. People Also Search For
- 28. Frequently Asked Questions
- 29. About Jainam Ferro Alloys
How to Choose the Right GI Jumper Manufacturer
India is home to hundreds of manufacturers ranging from small job shops to large ISO-certified exporters. International and domestic buyers typically evaluate manufacturers based on quality compliance, production capacity, export experience, and pricing transparency.
- Certification & international standards (ASME, ASTM, EN)
- Manufacturing capability vs trading activity
- Export documentation & inspection support
- Stock availability & lead time reliability
- Past supply experience in oil & gas, EPC & heavy industries
Comparison Factors Among GI Jumper Suppliers
| Evaluation Factor | Small Local Suppliers | Trading Companies | ISO-Certified Manufacturers |
|---|---|---|---|
| Manufacturing Control | Limited | None | Full in-house / audited partners |
| International Standards | Basic | Depends on source | IS 1239, ASTM A53 |
| Lead Time Reliability | Unpredictable | Depends on stock | Committed lead times with stock backup |
| After-Sales Technical Support | Minimal | None | Dedicated technical support |
| Risk for EPC Projects | High | Medium | Low |
International buyers typically prefer ISO-certified manufacturers for large-scale or critical applications due to better quality control, documentation, and lower project risk.
Why Global Buyers Choose Jainam Ferro Alloys
Jainam Ferro Alloys is a trusted ISO 9001:2015 certified manufacturer and global exporter of stainless & carbon steel products, supplying consistent, high-quality materials to customers across USA, UK, Europe, Middle East, Africa, and Asia-Pacific. Our focus on quality assurance, cost efficiency, and on-time delivery makes us a preferred sourcing partner for international buyers.
| Key Advantage | Buyer Benefit |
|---|---|
| ASME / ASTM / EN Compliant Products | Globally accepted standards with EN 10204 3.1 / 3.2 MTCs |
| Favorable Exchange Rate Advantage | Reduced landed cost for international importers |
| Responsive RFQ Turnaround | Detailed quotations typically issued within 1 hour |
| Consistent Batch-to-Batch Quality | Heat-number traceability from raw material to finished product |
| Export-Grade Packaging & Global Logistics | Sea-worthy packing, palletization & worldwide shipping support |
| ISO 9001:2015 Certified Manufacturing | Consistent quality with documented QA systems and process control |
| Dedicated Export Documentation Team | Smooth customs clearance with accurate, complete commercial paperwork |
| Trusted by Global Steel & EPC Companies | Proven export experience across 50+ countries |
| Long-Term Supply Partnerships | Repeat-order clients across multiple continents |
Features of GI Jumper
- ✔ Cost-effective alternative to stainless steel for non-corrosive service
- ✔ Hot-dip galvanized zinc coating protects against atmospheric corrosion
- ✔ Good mechanical strength for general utility and plumbing use
- ✔ NPT/BSP threaded ends for standard pipe fitting systems
- ✔ Custom lengths manufactured to drawing
- ✔ Manufactured to ASTM A53 / IS 1239 standards
Technical Overview of GI Jumper
| Product | Composition | Usage | Standards |
|---|---|---|---|
| GI Jumper (Light) | Carbon steel + zinc coating | Low-pressure water lines | IS 1239, ASTM A53 |
| GI Jumper (Medium) | Carbon steel + zinc coating | General utility piping | IS 1239, ASTM A53 |
| GI Jumper (Heavy) | Carbon steel + zinc coating | Higher-pressure industrial piping | IS 1239, ASTM A53 |
Specifications Table
| Material | Galvanized Carbon Steel (GI) |
|---|---|
| Grades | ASTM A53 Grade B, IS 1239 |
| Standard | IS 1239, BS EN ISO 1461 (galvanizing) |
| Size Range | 1/4" to 2" NPT/BSP |
| Length | Custom lengths as per drawing |
| Form | Threaded (NPT/BSP) |
| Zinc Coating | Minimum 350 g/m² hot-dip galvanized |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| GI Jumper (Light Class) | Carbon steel + zinc coating, thin wall | Low-pressure water and utility lines |
| GI Jumper (Medium Class) | Carbon steel + zinc coating, standard wall | General industrial and plumbing piping |
| GI Jumper (Heavy Class) | Carbon steel + zinc coating, thick wall | Higher-pressure utility and industrial lines |
Available Sizes of GI Jumper (Inch NPT/BSP)
| Size | Size |
|---|---|
| 1/4" | 3/8" |
| 1/2" | 3/4" |
| 1" | 1-1/4" |
| 1-1/2" | 2" |
Chemical Properties of GI Jumper
| Element | Composition (%) |
|---|---|
| Iron (Fe) | 98.00 - 99.50 (balance) |
| Manganese (Mn) | 0.29 - 1.06 |
| Carbon (C) | 0.30 (max) |
| Phosphorus (P) | 0.035 (max) |
| Sulfur (S) | 0.035 (max) |
| Zinc (Zn) Coating | min. 350 g/m² hot-dip galvanized coating |
Mechanical Properties of GI Jumper
| Property | Value |
|---|---|
| Tensile Strength | 415 MPa (min) |
| Yield Strength | 240 MPa (min) |
| Elongation | 30% (min) |
| Hardness | 70 HRB |
| Modulus of Elasticity | 200 GPa |
GI Jumper – Physical & Thermal Properties
Density of GI Jumper
| Property | Metric | Imperial |
|---|---|---|
| Density | 7,850 kg/m³ | 0.284 lb/in³ |
Melting Point of GI Jumper
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1,425 - 1,540 °C | 2,597 - 2,804 °F |
Specific Heat of GI Jumper
| Specific Heat of GI Jumper | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Room Temperature |
| 600 | 100 - 500 | High Temperature |
| 700 | 500 - 1,000 | Very High Temperature |
Electrical Resistivity of GI Jumper
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.72 | 20 | Annealed |
| 0.73 | 100 | |
| 0.75 | 200 | |
| 0.77 | 300 | |
| 0.80 | 400 | |
Equivalent Grades of GI Jumper
| Standard | Designation |
|---|---|
| ASTM | A53 Grade B |
| Indian Standard | IS 1239 (Part 1) |
| BS EN | 10255 / EN 10240 (galvanizing) |
| JIS | G3452 (SGP) |
Manufacturing Process & Heat Treatment of GI Jumper
Annealing
Carbon steel pipe used for GI jumpers is normalized at 880°C to 920°C prior to galvanizing, relieving manufacturing stresses and providing a uniform microstructure for consistent mechanical properties.
Forging
Heavier GI jumper fittings and unions are hot forged from carbon steel bar stock at 1100°C to 1250°C. After forming, all components are hot-dip galvanized in a molten zinc bath at approximately 450°C to form the protective coating specified in BS EN ISO 1461.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Normalizing | 880 - 920 | Air | Uniform microstructure prior to galvanizing |
| Tempering | 400 - 650 | Air | Reduce brittleness and improve toughness |
| Stress Relieving | 550 - 650 | Air | Relieve residual stresses from forming or welding |
Unlike stainless steel jumpers, GI jumpers rely on the zinc coating rather than alloy content for corrosion protection – coating thickness and coverage are verified per BS EN ISO 1461 before dispatch.
Various Types
GI Jumper (Light Class)
- Dimensions: 1/4" to 2" NPT/BSP
- Condition: IS 1239 Light
- Applications: Low-pressure water lines
GI Jumper (Medium Class)
- Dimensions: 1/4" to 2" NPT/BSP
- Condition: IS 1239 Medium
- Applications: General utility and plumbing piping
GI Jumper (Heavy Class)
- Dimensions: 1/4" to 2" NPT/BSP
- Condition: IS 1239 Heavy
- Applications: Higher-pressure industrial lines
GI Threaded Jumper
- Dimensions: 1/4" to 2" NPT/BSP
- Condition: ASTM A53 Grade B
- Applications: General industrial threaded pipework
Applications & Uses
- Oil & Gas Industry
- Petrochemical Plants
- Water Treatment Plants
- Pharmaceutical Industry
- Food & Beverage Industry
- Automobile Industry
Industries We Serve
Our alloys are widely used across:
- Steel Plants
- Foundries & Casting Units
- Automobile Industry
- Shipbuilding & Marine
- Oil & Gas
- Engineering Components
- Heavy Industrial Machinery
GI Jumper – Latest Price
Pricing for GI Jumper depends on size, grade, quantity, and delivery location. Share your requirement using the form or WhatsApp button on this page and our team will respond with a factory quotation within 1 hour.
Request Latest PriceMOQ & Payment Terms
Minimum Order Quantity: 25–100 Kg depending on part size and grade.
Payment Terms: Depending On Grade and Quantity Size
Export Packaging & Shipping
- Seaworthy, fumigated wooden crates with waterproof inner lining
- Palletised packing with clear shipping marks and heat number identification
- Container stuffing supervision with loading photographs available on request
Cities We Suppllied In India
| Supply Cities | |||||
|---|---|---|---|---|---|
| Mumbai | Delhi | Pune | Chennai | Hyderabad | Bengaluru |
| Ahmedabad | Rajkot | Coimbatore | Kolkata | Bhopal | Surat |
We exported to 50+ countries worldwide.
| Exported Countries | |||||
|---|---|---|---|---|---|
| USA | UK | UAE | Germany | South Africa | Australia |
| Italy | Canada | Netherlands | Qatar | Saudi Arabia | Malaysia |
Our Certifications
We are a certified manufacturer and exporter, committed to strict quality control and international compliance standards. Below are our key certifications.
Compliance
ISO 14001:2015
Importer Exporter
ISO 45001:2018
ISO 9001:2015
Udyam Registration
Quality Inspection & Testing
At Jainam Ferro Alloys, all products are checked through strict quality inspection and testing to meet international standards such as ASTM, ASME, EN, and DIN. This ensures consistent quality, accurate dimensions, and full material traceability.
- ✔ Chemical composition testing
- ✔ Mechanical tests such as tensile and hardness
- ✔ Dimensional inspection as per standard tolerances
- ✔ PMI, ultrasonic, and visual inspection (if required)
- ✔ EN 10204 3.1 / 3.2 test certificates
- ✔ Third-party inspection by SGS, TUV, BV, or Lloyd’s
Our quality systems support reliable supply for oil & gas, petrochemical, power, marine, and heavy engineering projects.
People Also Search For
Frequently Asked Questions
About JAINAM FERRO ALLOYS
- ✔ Decades of experience in stainless steel, carbon steel, and alloy steel manufacturing
- ✔ ISO 9001:2015 certified company ensuring strict quality control standards
- ✔ Specialized in cold drawn pipes and tubes processing
- ✔ State-of-the-art manufacturing facilities with modern machinery
- ✔ Precision-engineered products with consistent quality and reliability
- ✔ Customized steel solutions as per client drawings and specifications
- ✔ Compliance with international industry standards
- ✔ Trusted supplier for critical industrial applications worldwide
