Alloy 625 Chemical Injection Line High Strength For Oil and Gas

Alloy 625 Chemical Injection Line High Strength For Oil and Gas

Company & Factory Introduction

MTSCO is a professional factory complex in the industrial piping sector, operating four major product divisions. In 2024, MTSCO established itsown production base—Siri Tubing—specializing in the manufacturing of chemical injection lines, capillary tubes, multi-core tubing, and cables. The factory strictly follows international ASTM standards and can supply various materials including 304, 316, 2205, 2507, Alloy 625, and Alloy 825. Siri Tubing has obtained ISO certification and has long-term partnerships with international energy companies such as OXY, KOC, and ADNOC. We are not just selling products, we are also your reliable supply chain partner.

Specifications

Manufacturing Process Flow

The production of chemical injection lines begins with steel strip. First, incoming inspection of the raw steel strip is conducted to confirm the material is correct; then strip butt welding is performed. The welded strip is cleaned first, then formed into a tube shape, and the tube body is formed through laser welding. Next, the product undergoes sizing, cold drawing, and in-line bright annealing processes. The formed chemical injection line also requires in-line eddy current testing as well as hydrostatic or airtight testing to verify weld integrity and pressure sealing performance. Finally, the product undergoes precision winding, marking, final inspection, plastic encapsulation, packaging, and warehousing, with shipment arranged according to customer requirements.

Laser Welding Process

Laser welding is a key process that determines the quality of chemical injection lines. MTSCO adopts 100% laser welding process, using high-energy-density laser beams to precisely melt the formed tube. The welded seam has narrow width and small heat-affected zone, effectively avoiding oxidation and embrittlement. Laser welding ensures beautiful weld formation and strong dimensional consistency. During production, laser welding parameters are adjusted in real-time by an automatic control system to ensure stable and reliable quality of every weld seam.

Alloy 625/ UNS N06625

Alloy 625 is a nickel alloy. Its primary strengthening elements are molybdenum and niobium. This material possesses exceptional high-temperature strength and oxidation resistance. Alloy 625 also offers excellent corrosion resistance, including resistance to pitting, crevice corrosion, and seawater corrosion. It is suitable for applications in aircraft engines, gas turbines, rocket engines, offshore platforms, diving equipment, the nuclear industry, chemical reactors, and high-temperature, high-pressure valves.

Eddy Current Testing

MTSCO configures in-line eddy current testing equipment on the production line to perform 100% testing on chemical injection lines after laser welding. Eddy current testing utilizes the principle of electromagnetic induction—when the probe scans the surface of the tube, abnormal electromagnetic signals occur in the weld area, and the system automatically identifies and marks defect locations. Eddy current testing has high efficiency and extremely high sensitivity. This method can detect defects such as surface cracks, pores, and lack of penetration.

Siri Laboratory Introduction

Siri Laboratory is equipped with tensile testing machines, impact testing machines, metallographic microscopes, hardness testers, and other equipment, capable of conducting various mechanical property tests including tensile testing, flaring testing, flattening testing, bending testing, and hardness testing. At the same time, the laboratory conducts professional testing such as chemical composition analysis, intergranular corrosion testing, and metallographic analysis. The laboratory's comprehensive testing system provides reliable quality assurance for Siri Tubing products.

FAQ

Q1: What is the maximum length of chemical injection lines?
A1: Our chemical injection lines can reach a maximum length of 50,000 feet, approximately 15 km, per coil. Ultra-long continuous production reduces the number of field splices.

Q2: What is the maximum operating pressure of chemical injection lines?
A2: Chemical injection lines have a standard hydraulic test pressure of 5,000 PSI and can withstand a maximum test pressure of 15,000 PSI, meeting the requirements of the vast majority of high-pressure applications.

Q3: What packaging methods do you support?
A3: We offer multiple packaging options including plastic reels, wooden reels, solid wooden reels, iron reels, iron-wood combined reels, and wooden boxes. Wooden strips and ropes are used for reinforcement during container loading to ensure products arrive intact in long-distance transportation. All packaging and loading processes are photographed and archived.