From Wikipedia, the free encyclopedia
Jump to navigationJump to search
This article is about the type of composite material. For the thermal insulation material sometimes called fiberglass, see glass wool. For the glass fiber itself, also sometimes called fiberglass, see glass fiber. For similar composite materials in which the reinforcement fiber is carbon fibers, see carbon-fiber-reinforced polymer.
Fiberglass (American English), or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet (called a chopped strand mat), or woven into a fabric. The plastic matrix may be a thermoset polymer matrix—most often based on thermosetting polymers such as epoxy, polyester resin, or vinylester—or a thermoplastic.

Cheaper and more flexible than carbon fiber, it is stronger than many metals by weight, is non-magnetic, non-conductive, transparent to electromagnetic radiation, can be molded into complex shapes, and is chemically inert under many circumstances. Applications include aircraft, boats, automobiles, bath tubs and enclosures, swimming pools, hot tubs, septic tanks, water tanks, roofing, pipes, cladding, orthopedic casts, surfboards, and external door skins. Fiberglass covers are also widely used in the water treatment industry to help control odors.[1]

Other common names for fiberglass are glass-reinforced plastic (GRP),[2] glass-fiber reinforced plastic (GFRP)[3] or GFK (from German: Glasfaserverstärkter Kunststoff). Because glass fiber itself is sometimes referred to as “fiberglass”, the composite is also called “fiberglass reinforced plastic”. This article will adopt the convention that “fiberglass” refers to the complete glass fiber reinforced composite material, rather than only to the glass fiber within it.

Amine epoxy GRE line pipe (design as per API-15HR)

  • Product scope:

1、 Diameter:DN40-DN600mm

2、 Pressure:PN1. 0-25Mpa Standards for implementation

1.API 15HR 2.API 15LR

3.SY/T 6267-2006 4.SY/T 6266-2004

  1. DN40-2
  • Temperature tolerance grade

1、Long-term service temperature of acid anhydride cured epoxy system

<65°C,Maximum temperature resistance80°C

2、 Long-term service temperature of aromatic amine cured epoxy system

<93. 3°C,Maximum temperature resistance135°C

  • Minimum Service Temperature of Epoxy Pipeline Products>_35°C

♦Product characteristics:

1、 Excellent corrosion resistance

2、 Good fatigue resistance, product design service life of 20 years

3、 High pressure and high safety factor

4、 Light weight, easy to install

5、 Good sealability in connection with steel pipe

6、 High, medium and low pressure grades meet the requirements of different media transportation

7、 The pipeline is not conductive (it can be designed as conductive product according to the engineering condition), the inner surface is smooth, the friction coefficient is small, and the fluid conveying efficiency is high.


  • The parameters are as follows
Serial No. DN Rated Pressure DNID Theory Theory DN Nominal Connection Type
Wall Thickness Length
(mm) (in) (Mpa) (mm) (mm) (mm) (m)
1 DN40 1 1/2 7 38.2 1.78 41.8 9.14 API Threaded Connection
2 8.5 38.2 1.78 41.8
3 10 38.2 2.04 42.3
4 12 38.2 2.48 43.2
5 14 38.2 2.92 44
6 16 38.2 3.38 45
7 18 38.2 3.86 45.9
8 20 38.2 4.34 46.9
9 22 38.2 4.85 47.9
10 25 38.2 5.63 49.5

API SPEC 15LR-2013 Low-pressure Fiberglass line Pipe

Organization: API
Publication Date: 1 August 2013
Status: Active
Page Count: 38

This speciÞcation covers Þlament wound (FW) and centrifugally cast (CC) Þberglass line pipe and Þttings for pipe in diameters up to and including 24 in. in diameter and up to and including 1000 psig cyclic operating pressures. In addition, at the manufacturerÕs option, the pipe may also be rated for static operating pressures up to 1000 psig. It is recommended that the pipe and Þttings be purchased by cyclic pressure rating. The standard pressure ratings range from 150 psig to 300 psig in 50 psig increments, and from 300 psig to 1000 psig in 100 psig increments, based on either cyclic pressure (ref. 5.5.1) or static pressure (ref. 5.5.2). Quality control tests, hydrostatic mill tests, dimensions, weights, material properties, physical properties, and minimum performance requirements are included..

API SPEC 15LR-2013 Low-pressure-Fiberglass-Line-Pipe

API SPEC 15HR 2016 High-pressure Fiberglass Line Pipe standard

Organization: API
Publication Date: 1 February 2016
Status: Active
Page Count: 42

This specification was formulated to provide for the availability of safe, dimensionally, and functionally interchangeable high-pressure fiberglass line pipe with a pressure rating from 500 lbf/in.2 to 5000 lbf/in.2 (3.45 MPa to 34.5 MPa), inclusive, in 250 lbf/in.2 (1.72 MPa) increments for pipes ≤ than NPS 12 inches and 100 lbf/in.2 (0.69 MPa) increments for pipes ˃ than NPS 12 inches. This specification is limited to mechanical connections and the technical content provides requirements for performance, design, materials, tests and inspection, marking, handling, storing, and shipping. Critical components are items of equipment having requirements specified in this document.

This specification is applicable to rigid pipe components made from thermosetting resins and reinforced with glass fibers. Typical thermosetting resins are epoxy, polyester, vinyl ester, and phenolic. Thermoplastic resins are excluded from the scope of this specification. Any internal liners applied shall be made also from thermosetting resins. Fiberglass line pipe for use in low-pressure systems are covered in API Spec 15LR.

This specification covers fiberglass pipe utilized for the production of oil and gas. Specific equipment covered by this specification is high-pressure line pipe and couplings, fittings, flanges, and reducers and adapters.

API SPEC 15HR-2016 High-pressure-Fiberglass-Line-Pipe