QUALITY is our priority
Scientific and
production company UKRTRUBOIZOL (UTI) is the company in
Ukraine to produce a 2-layer and 3-layer anticorrosion coating on tubes of 57
to 1020 mm outside diameter by industrial polyethylene (PE) or polypropylene (PP) extrusion.
Tubes
with this coating are used for underground gas, oil, and water supply pipelines
operating with products at temperatures from –40 to +80˚C.
Unlike
bituminous, polymer tape and other coating methods used presently in Ukraine,
extruded PE or PP provides for much higher quality
of the coating, especially its mechanical strength, high adhesion, low water
permeability and absorption; these guarantee long service life (40 to 50 years)
and operational safety of pipelines.
The
coating consists of PE or PP layer of 1.8 to 3.5 mm thickness extruded onto a hard
adhesive sublayer and sublayer of epoxy primer. The
adhesive and epoxy provide for high adhesion of the outer coating while the PE
guarantees high mechanical strength.
Technical specifications on coated tubes and pipes from UTI has
been approved by Ukrainian gas and oil supervision agency (NAK "Neftegas
of Ukraine") and by State labor safety department (Gosnadzorohrantruda); this
specification provides the basic for design and construction of new oil & gas
pipelines in Ukraine.
Tests of coating shown its conformity to the requirements of ukrainian DSTU 4219 "Steel pipelines. General requirements to corrosion
protection", GOST
9.602-89 "Underground facilities. General requirements to corrosion protection"
and GOST 25812-83 "Steel pipelines. General requirements to corrosion
protection".
Besides, coating satisfies the requirements of DIN 30670 "PE
coatings" and GOST R 51164-98 "Steel pipelines. General requirements to
corrosion protection".
"Ukrtruboizol" has been awarded the following quality certificates:
|
1. |
Certificate of conformity
UA 1.090.01355-01, issued by the Center of
construction materials and structures; |
2. |
Certificate of conformity
UA 1.048.0009412-01, issued by the Center of oil and
gas facilities inspection; |
3. |
Authorization
394.01.30-45.32.0 for highly specialized works issued by the State labor
safety administration of
Ukraine (Gosnadzorohrantruda); |
4. |
UTI
coating is quoted as permissible in the state civil construction code of
Ukraine (DBN B.2.5-20-2001), |
|
and many other. |
Since the beginning of 90-s the 2- and 3-layer anticorrosion coating on tubes and pipes by industrial
polyethylene and polypropylene extrusion has begun a high priority in world practice. |
|