Grain Size Oil Gas Fields Seamless Stainless Steel Tubing Corrosion Resistance

Super Duplex 2507 Stainless Instrument Tubing Corrosion Resistance Smooth Surface

Super Duplex Stainless 2507, Chemical composition

Application: Super duplex alloy combining excellent strength with good corrosion resistance in high chloride and seawater environments

Tensile strength, min.: 116ksi (800MPa)

Yield strength, min.: 80ksi (550MPa)

Elongation in 2 in., min.: 15%

Hardness, max.: Brinell 310, or Rockwell C 32

Quality Assurance

Stainless steel tubes are delivered in straight lengths

Steel grades ensures high corrosion resistance

Special eccentricity and controlled hardness is ideal for hydraulic & instrumetation system

High surface smoothness and close dimensional tolerance, polished outside surface is the option

High inside surface cleanness

Tube be eddy current tested. Hydrostatic test is the option

The tube mill is ISO 9001, PED 97/97/23/EC approved

Production Process

Seamless & Redrawn Tubing

Seamless extruded tube hollows are drawn or drawn / sunk to final size to produce seamless tubing coils 500 to 2,000 ft. long, depending upon the size. The tubing is heat treated and joined by orbital welding to achieve the desired length. The final material condition of the tubing is heat treated.

Super Duplex Stainless 2507 material provides excellent corrosion resistance in chloride-containing environments.

All Super Duplex Stainless 2507 control line tubing offered by MEILONG are made from a controlled-chemistry. Super Duplex Stainless 2507 material with minimum pitting resistance equivalent (PRE) value of 42.5

Size include 1/4’’, 3/8’’, 1/2’’, 5/8’’, 3/4’’, and 1 in. outside diameter.

Tubing nominal wall thickness meets ASTM A-789

Tube markings include size, material type/grade, specification, heat number, and other information.

• Order specification (in metric size mm):

6.0 x 1.0

6.0 x 1.2

6.0 x 1.5

8.0 x 1.0

8.0 x 1.2

8.0 x 1.5

10.0 x 1.0

10.0 x 1.2

10.0 x 1.5

10.0 x 2.0

12.0 x 1.0

12.0 x 1.2

12.0 x 1.5

12.0 x 2.0

• Steel grades

Other steel grades or alloy grades are available, e.g. 904L, 317, duplex 2205, alloy 400, alloy 600, alloy 800, alloy 825

Hydraulic & Instrumentation Tubes are important components in hydraulic and instrumentation systems to protect and partner with other components, devices or instruments to secure the safe and trouble-free operations of oil and gas plants, petrochemical processing, power generation and other critical industrial applications.

• Bright annealed

Reduce contamination with smart surface

• Controlled hardness

Effective sealing with ferrules

• End capped

Maintain high cleanness

• Fixed lengths

Efficient work planning & material control

• High roundness

Effective sealing at connections

• High cleanness

Reduce contamination-risks in the system

• 100% eddy-current and hydrostatic tested

Secure high & consistent quality

• 100% PMI tested

Eliminate risk & hazards

• Controlled dimensional tolerances

Secure high performance with other components in the system

• Dual grade & specification marked & certified

Conform to a large variety of technical requirements

Applications

Instrumentation & control lines, safety systems, sampling & analyzer lines, hydraulic systems, pneumatic lines, process impulse lines, signal transmission lines, subsea equipment, fuel & CNG lines, compressors

• Oil and gas
• Petrochemical
• Automotive & rail
• Marine & shipbuilding
• Power generation
• Desalination plants
• Medical & pharmaceutical
• Pulp & paper

Norm Equivalence

Since 1999, Meilong Tube Co., Ltd. has produced both long coils and straight length of stainless steel and high nickel alloy tubing for numerous oil and gas applications, including hydraulic power, monitoring and control equipment, instrumentation, injection lines, down-hole safety valve control, subsea umbilical applications. Unique manufacturing capabilities and processes allow Meilong to produce the longest continuous length control line tubing available in stainless steels and high nickel alloys.

Our coiled tubing is available in a number of high performance corrosion resistant stainless steels and high nickel alloys, including 300 series, Incoloy, Inconel, capable of withstanding a variety of severe environmental conditions.

We specialize in manufacturing small diameter tubing ranging from 0.125 inch to 1 inch outside diameter (3.18mm to 25.4 mm) and a variety of wall thickness. Besides straight length instrumentation tubing, tubing is level wound coiled on various size spools, and products are tested and evaluated for specific applications before delivery. Our engineering staff welcome the opportunity to work with customers to solve special problems.

Vacuum annealing

Meilong takes special care during manufacturing to assure ID and OD cleanliness of instrumentation tubing. Vacuum annealing insures volatility of metallic oxides and removal of any residual degreasing solvents or drawing lubricants. Vacuum annealing our stainless steel tubing insures a bright, cosmetically appealing surface as well as excellent mechanical properties.

Meilong commitment to quality excellence

From the time an order is received, sent through the production process, completed, and finally shipped, many levels of inspection occur to reinforce Meilong’s Quality Policy. The job of ensuring quality products extends as far as our machine operators. Meilong operators take ownership over material processed at their stations by measuring for dimensional accuracy and conducting a visual inspection of every piece.

Suzhou Vanforge Metals Co., Ltd. was set up in April 1999 with a registered capital of 230 million Yuan in Zhangjiagang Bonded Area in Jiangsu Province of China. It has developed to be an important R&D and manufacture enterprise of high performance stainless steels and nickel alloys.

Vanforge is a high-tech enterprise with 70 national patents, it has its own Special Alloy Research Center, academician workstation and post doctorate innovation practice base. Vanforge has been certificated the national laboratory accreditation of ISO/IEC 17025, and ISO9001, ISO14001, OHSAS18001, API Q1, IATF16949, GB/T23331, TUV, CCS, DNV, LR, ABS.

Vanforge has the international advanced special smelting capacity, including the German ALD 6t vacuum induction furnace, 6t consumable electrode vacuum furnace, 18t drawing-ingot protective atmosphere electroslag furnace and 1t vacuum induction furnace, 3t electroslag furnace, 18t drawing-hollow ingot electroslag furnace, and 2# Purification Furnace/1# Purification Furnace/LF/AOD/VOD refining production line, 25MN/8MN fast forging machine, 450/320 rolling mill, etc.

The current annual production capacity of Vanforge is 120,000 tons, and the main products are high-grade special alloy materials, including high temperature alloy, corrosion resistant alloy, precision alloy, ultra high strength steel, special stainless steel, high-grade tool and mould steel, steam turbine blades steel, gas turbine steel, ultra-supercritical materials, etc., which are widely used in aviation, aerospace, ship, petrochemical, nuclear power, electronics, steam turbine, high-speed rail, machinery manufacturing, and other fields; besides, we can organize the research and development and production of new materials according to customer demand for new materials. Vanforge has now become a qualified supplier of domestic high-end equipment manufacturing enterprises, such as CASIC, CGN, CRRC, CFHI, Wujin Stainless, Zhejiang Jiuli Hi-Tech Metals Co., Ltd., Xinxing Ductile Iron Pipe Co., Ltd., etc.

We always adhere to the concept of quality first, integrity based, scientific and technological innovation, making progress, and wholeheartedly serving customer and devote ourselves to becoming the well-known supplier of key basic materials of world’s high-end equipment manufacturing industry.

We supply following products in the forms of wires, bars, plates

(Super) austenitic stainless steels

(Super) duplex stainless steels

(Supper) Ferritic stainless steels

Precipitation hardening stainless steels

Incoloy alloys

Inconel alloys

Monel alloys

Hastelloy alloys

As well as following steel products

Gear steels

Bearing steels

Spring steels

Drilling tool steels

Free-cutting steels

Anchor steels, mooring chain steels

Mining chain steels

Die steels, Mold steels, tool steels

Structural steels

Antiwear steels

Offshore structure steels

Petroleum storage tank steels