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14th August, 2023
  • 14th August, 2023

Hey Sailors, here I am out of the office window with some more Flexomarine Hose stuff. There had passed another month running some brand new Flexomarine Hoses Reeling system integration [...]

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14th November, 2023
  • 14th November, 2023

Hey Sailors, here I am out of the office window with Flexomarine Hose stuff. There we had passed another month maintaining one of our many Flexomarine SPM systems [...]

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8th Dezember, 2023
  • 8th Dezember, 2023

Hey Sailors, here I am out of the office window with Flexomarine Hose stuff. There we had passed another month installing our brand new masterpiece Flexomarine [...]

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About Us

Founded in 1978, Flexomarine has been on the market for 45 years manufacturing excellent marine products. More than 17,000 marine hoses have been supplied all over the world.

With its own know-how and technology and a team of highly qualified and experienced professionals, Flexomarine has established itself in a highly competitive market, especially in the new frontiers of offshore oil exploration and production in ultra-deep waters, where extreme climatic and maritime conditions place hoses under severe conditions of use and application.

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Clarify your doubts

FAQ

FAQ

Recommended torque used to stud bolts carbon steel coated with PTFE.

Stud bolts material

Bolts: ASTM A193 gr B7

Nuts: ASTM A194 gr 2H

Bolt Diameter Heavy Nuts Size Torque (N.m)
50 % Yield Stress
3/4” 1.1/4" 215
7/8” 1.7/16” 340
1” 1.5/8” 505
1.1/8” 1.13/16” 730
1.1/4” 2” 1010
1.1/2” 2.3/8” 1770

Optionally, stainless steel stud bolts can be used (however the yield is less than carbon steel).

Stud bolts are used to connect the hose flanges, which are normally made of carbon steel coated with PTFE.

Carbon Steel Stud bolts material.

Bolts: ASTM A193 gr B7

Nuts: ASTM A194 gr 2H

Optionally, stainless steel stud bolts can be used

Stainless Steel Stud bolts material

Bolts: ASTM A193 gr B8M

Nuts: ASTM A194 gr 8M

The most commonly used gaskets are CNAF (compressed Non Asbestos Fiber), or Spiral Wound Gaskets with PTFE filler.

The field hydrostatic test consists of filling the hose string with water, bleeding out any air remaining, and then raising the internal pressure to the Rated Working Pressure (RWP) of the hoses, or the normal operating pressure plus 50%, whichever is greater.

The lifespan of a hose depends on several factors, however, according to Flexomarine's experience, the most demanded hoses, such as First off Buoy and Tanker Rail, usually have a lifespan of approximately 3 years, while a Mainline hose, can reach approximately 5 years.

The used hoses are tested according to OCIMF “Guidelines for the Handling, Storage, Inspection and Testing of Hoses in the Field”, Second Edition – 1995, and basically consists of:

• Visual Inspection

• Hydrostatic Test

• Electrical Continuity Test

• Vacuum Test

The repair of the body of an offshore hose will be performed when only superficial damage has occurred, i.e., a damage that does not affect the primary or the secondary carcass.

The average manufacturing time for a hose, with all its tests, is approximately 10 days.

The hoses should be laid out straight on solid supports, in cool, dry and dark storage conditions.

Contact Us

flexomarine@flexomarine.com.br

(11) 2633-8628

(11) 98551-6049

Av. Júlia Gaioli, 1544 - Guarulhos - SP
CEP: 07251-500

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