Inconel Alloy 625 Hydraulic Steel Pipe , Steel Hydraulic Tubing Hydrostatic Tested

Product Details:
Place of Origin: China
Brand Name: MEILONG
Certification: ISO9001:2015, PED 97/23/EC
Model Number: 3/8'' OD x 0.049'' WT
Payment & Shipping Terms:
Minimum Order Quantity: 10000 feet
Price: Negotiable
Packaging Details: Level wound coiled on wooden spool, and wooden case packing
Delivery Time: 10 days (for our required MOQ)
Payment Terms: L/C, T/T
Supply Ability: 150000 meters per month

Detail Information

Material: Inconel Alloy 625 Comply With NACE MR0175/ISO15156 Tube Type: Seamless
Condition: Bright Annealed Length: Up To 10000 Meters Long Per Reel
Qualification: Hydrostatic Tested Application: Oil And Gas Fields
Surface: Metallic Bright Specialty: High-pressure Hydraulic
High Light:

annealed stainless steel tubing


seamless hydraulic tubing

Product Description

Inconel Alloy 625, Chemical composition



Inconel Alloy 625 is an austenitic nickel / chromium / molybdenum / niobium alloy (see Table 1 on reverse). The high alloy content enables alloy 625 to withstand severe aqueous corrosion environments. High molybdenum content (8.0 to 10.0%) makes the alloy very resistant to chloride pitting and crevice corrosion. High nickel content (58.0% min.) provides relative freedom from chloride ion induced stress-corrosion cracking. Alloy 625 has shown excellent corrosion resistance in oil and gas production environments containing hydrogen sulfide, carbon dioxide and chlorides. Consult ISO 15156-3, Table A.14 for the limits regarding material type 4d in hydrogen sulfide containing environments for oil and gas production.


Element Composition, %
Chromium 20.0-23.0
Nickel 58.0 min.
Ferrous 5.0 max.
Molybdenum 8.0-10.0
Cb+Ta 3.15-4.15
Manganese 0.50 max.
Silicon 0.50 max.
Carbon 0.100 max.
Phosphorus 0.015 max.
Sulfur 0.015 max.
Aluminum 0.40 max.
Titanium 0.40 max.
Cobalt 1.0 max.

Application: Nickel alloy with very good resistance to pitting, crevice corrosion & sour well environments.

Tensile strength, min.: 120000psi (827MPa)

Yield strength, min.: 60000psi (414MPa)

Elongation in 2 in., min.: 30%



Inconel Alloy 625 seam welded pressure tubing in the heat treated and cold worked condition is typically used in oil and gas wells for chemical injection applications. In such applications, it is commonly referred to as capillary tubing and is free hanging (self-supporting) inside the production casing. The chemicals being injected are often used to enhance production flow rates, inhibit corrosion or scaling and/or de-water. The tubing is frequently supplied as 5,000 to 35,000 ft. coils on a wooden reel, depending on size.


Manufacturing Process and Resultant Properties

Strip splice welds join lengths of cold rolled strip to enable long lengths between orbital welds (greater than 14,500 ft between orbital welds is achievable). The strip is formed into a tubular cross section and longitudinally seam welded using the gas tungsten arc (GTAW) process. The tubing is first sunk to an intermediate outside diameter, heat treated, and make the same process to obtain the desired size.


Nondestructive Testing (NDT)

Eddy current testing (ECT) is performed on the longitudinally seamwelded tubing and strip splice welds at intermediate size in the as-heat treated condition. Those strip splice welds detected by ECT at intermediate size in the as-heat treated condition. Yield pressure hydrostatic testing is performed on the heat treated tubing at final size.


Quality Assurance

Eddy current test (ECT)

Ultrasonic test

Hydrostatic test

Chemical composition analysis

Tensile test

Hardness test

Dimension & visual inspect

Metallographic analysis


Standards and Specifications

Alloy 625 Tubing with Enhanced Properties


ASTM B704, Standard Specification for Welded UNS N06625, UNS N06219, and UNS N08825 Alloy Tubes, except in the as-cold worked condition


ASTM B444, Standard Specification for Alloy UNS N06625 Seamless Pipe And Tube


Meets the material limits for annealed and cold-worked, solid solution, nickel-based alloys listed in ISO 15156-3 for material type 4d in Table A.14.


Coiled Tubing Size

Imperial size Metric size









1/8 (0.125) 0.028 3.18 0.71
  0.035 3.18 0.89
3/16 (0.188) 0.028 4.76 0.71
  0.035 4.76 0.89
  0.049 4.76 1.24
1/4 (0.250) 0.035 6.35 0.89
  0.049 6.35 1.24
  0.065 6.35 1.65
  0.083 6.35 2.11
3/8 (0.375) 0.035 9.53 0.89
  0.049 9.53 1.24
  0.065 9.53 1.65
  0.083 9.53 2.11
1/2 (0.500) 0.035 12.7 0.89
  0.049 12.7 1.24
  0.065 12.7 1.65
  0.083 12.7 2.11
5/8 (0.625) 0.049 15.88 1.24
  0.065 15.88 1.65
  0.083 15.88 2.11
3/4 (0.75) 0.065 19.05 1.65
  0.083 19.05 2.11
1 0.065 25.4 1.65
  0.083 25.4 2.11


Tubing length up to 32,808 feet (10,000 m)

For control line, chemical injection line, umbilicals


Available materials

Austenitic: 316L

Duplex: S31803, S32205

Super Duplex: S32750

Nickel alloy: N06625, N08825


Norm Equivalence

Grade UNS No Euro norm Japanese
No Name JIS
Alloy ASTM/ASME EN10216-5 EN10216-5 JIS G3463
316L S31603 1.4404, 1.4435 X2CrNiMo17-12-2 SUS316LTB
2205 S31803 1.4462 X2CrNiMoN22-5-3 SUS329J3LTB
2507 S32750 1.4410 X2CrNiMoN25-7-4  
625 N06625 2.4856 NiCr22Mo9Nb  
825 N08825 2.4858 NiCr21Mo  



Inconel Alloy 625 Hydraulic Steel Pipe , Steel Hydraulic Tubing Hydrostatic Tested 0
Inconel Alloy 625 Hydraulic Steel Pipe , Steel Hydraulic Tubing Hydrostatic Tested 1

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