Abstract:
Methods and manufactures disclosed herein generally relate to a tubular composite (TCS) structure composed of multiple layers of sealing, reinforcement sensing, protection and interspatial injected materials. Certain methods and manufactures disclosed herein further relate to the utilization of materials, manufacturing, mechanical function, and methodologies to produce tubular composite structures for the renewal of pipeline systems, standalone pipelines and standalone coiled storage usages. The tubular composite structure comprises a tubular assembly, wherein the tubular assembly may comprise a sealing layer, one or more axial reinforcement layers, a hoop reinforcement layer, and a protective layer; each tubular assembly optionally further comprising a sensor array layer: and the tubular composite structure optionally further comprising one or more interspatial annular cylinders between adjacent tubular assemblies.
Abstract:
The present invention relates to an adhesive polyethylene composition comprising (A) from 60 to 90 wt% of a non-elastomeric polyethylene being a terpolymer of ethylene with two different alpha-olefin comonomer units selected from alpha-olefins having from 4 to 12 carbon atoms; (B) from 9.0 to 38 wt% of an elastomer; wherein onto component (A) or components (A) and (B) an acid grafting agent (C) has been grafted in an amount of from 0.01 to 3.0 wt%, all based on the total weight of the adhesive polyethylene composition, a multi-layer structure comprising said adhesive polyethylene composition and the use of said adhesive polyethylene composition for the production of a multi-layer structure.
Abstract:
A connector assembly (608) for a length of corrugated tubing (601) having an inner corrugated element (602) and an outer flexible sheath layer (603). The connector assembly (608) comprises a fitting (609) including a fluid-flow passage and an abutment surface (612) for the corrugated tubing (601) to seat thereon; axial loading means operably connectable to the fitting (609), the axial loading means including a connector (613) and a collet (610), the collet (610) having a radially inward protruding clamping element (611) for insertion into a trough (606) of the inner corrugated element (602), and a sheath-contact portion (625) for engaging the outer sheath layer (603), so that, when the connector (613) moves the collet (610) into engagement with the fitting (609), the collet (610) causes the corrugated element (602) to move onto the abutment surface (612) whilst maintaining engagement with the outer sheath layer (603).The sheath-contact portion (625) is axially positionable between the inner corrugated element (602) and the outer sheath layer (603) of the corrugated tubing (601), in use.
Abstract:
The present invention disclosed a pipe connector assembly (20) for a metal-plastic composite pipe connection comprising a connector (25) configured to couple to a pipe end (35), a threaded reducer nut (40) configured to connect to the pipe end (35) and over a connection between the pipe end (35) and the connector end (25), a half coupling (45) configured to couple to a portion of the threaded connector end (30), and a nut (50) configured to couple to the threaded reducer nut (40) and over the half coupling (45). A continuity of the threads on the metal pipe (27) of the connector end (30) and the threads on the pipe end (35) are formed and that the crest of the threads on the pipe end (35) is position higher than the threads on the connector end (30) and that the crest of the threads on the metal pipe (27) is gradually taller towards the connector end (30).
Abstract:
A three layer PVDF coating system is provided for oil or gas pipe. The system comprises a steel pipe, an epoxy layer, for example, made from a high temperature liquid epoxy or a FBE, preferably a high temperature FBE, which provides excellent adhesion to the steel pipe and anti-corrosion protection, a maleic anhydride modified PVDF tie layer which provides excellent bonding to both FBE and PVDF topcoat, and substantially blocks water and oxygen degradation of the FBE by forming a protective, bonded, coating overtop of the FBE, and a PVDF layer which provides a further excellent water and oxygen barrier, as well as excellent mechanical protection. Also provided is a method of manufacturing a pipe having said coating system.
Abstract:
A Polyethylene of Raised Temperature resistance (PE-RT) pipe (12) which includes an inner injection moulded thermoplastic conduit (12.1) having a wall thickness of more than 3mm, a co-axial metal barrier layer (12.2) over the inner thermoplastic conduit (12.1) and a co-axial outer polymer sheath (12.3) injection moulded over the metal barrier (12.2).
Abstract:
Die Erfindung betrifft ein Kunststoffrohr (1), das als Hochdruckrohr ausgebildet ist, mit einer Rohrwand (2), die eine erste Schicht (3) aus einem Kunststoff umfasst, und einer in der Rohrwand (2) angeordneten Verstärkungsstruktur (4). Um ein Kunststoffrohr (1) bereitzustellen, dessen Aufbau und mechanische Eigenschaften optimiert sind, wird vorgeschlagen, dass die Verstärkungsstruktur (4) schlauchförmig ausgebildet ist und in die erste Schicht (3) eingebettet ist. Außerdem betrifft die Erfindung ein Verfahren zum Herstellen eines Kunststoffrohrs (1).
Abstract:
Ce procédé comprend les étapes suivantes : - assemblage bout-à-bout de tronçons (18) de tube métallique pour former un tube interne (14) présentant un passage continu (20) de circulation de fluide; - disposition d'un manchon (30) d'isolation thermique autour de chaque tronçon de tube (18) métallique, le manchon d'isolation thermique (30) comprenant au moins une gorge longitudinale (32); - introduction d'une ligne fonctionnelle continue (17) dans au moins deux gorges longitudinales (32) d'au moins deux tronçons de tube (18) adjacents; - bouchage de chaque gorge longitudinale (32) pour couvrir la ligne fonctionnelle (17) continue.