yayayaya
Post on 02-Jun-2018
222 Views
Preview:
TRANSCRIPT
-
8/10/2019 yayayaya
1/2
SteelPipeC
oating
DOW POLYOLEFIN MATERIALS FOR
STEEL PIPE COATING
About Steel Pipe CoatingCoating a steel pipe in plastic can help to p revent or minimize the
possibility of pipeline corrosion as a result of extreme external
conditions, mechanical impacts or degradation by heat or UV
irradiation. Plastic coating systems typically consist of three-
layers: a fusion bonded epoxy (FBE) applied to the surface of
the steel pipe, an adhesive, and a top-coat made from polyolefin
materials. Over the last ten years, the steel pipe coating industr y
has migrated from the common use of low density polyethylene
(LDPE) top-coats to medium density polyethylene (MDPE) and highdensity polyethylene (HDPE) top-coats. The main reasons for the
change include higher operating temperatures for pipelines and
the industrys enhanced understanding of crack and resistance
needs in extreme climatic conditions.
Requirements for Polyolefin Materials in
Steel Pipe Coating Systems
Critical requirements for polyolefin materials used in three-layer
steel pipe coating systems include:
Excellent adhesion and adhesion retention.
Durability.
Crack resistance.
Long-term stability.
Low levels of built-in stress during the coating process.
New Polyolefin Materials for Steel PipeCoating
Dow has introduced new top-coat and adhesive polyolefin
materials for three-layer steel pipe coating systems:
DOW HDPE 12110G, a black high density polyethylene
(HDPE) top-coat material that offer excellent environmental
stress crack resistance (ESCR), excellent physical properties
and easy processing.
AMPLIFY GR 320, a grafted adhesive resin that offers
excellent adhesion to both the FBE and top-coat layers in athree-layer coating system, in addition to easy processing,
mechanical strength at high and low temperatures, good
temperature resistance and low water absorption.
A three-layer steel pipe coating system comprised of DOW HDPE
12110G and AMPLIFY GR 320, together with an FBE bonded directly
on the steel pipe, can help deliver good coating performance for
the lifetime of oil and gas pipelines while also offering excellent
processability on conventional pipe coating lines.
Dow: A Leader in the Plastic Pipes
Industry
Dow is a leading global plastics supplier and the number one
global producer of polyethylene.
Dow has manufacturing sites on five continents, providing the
flexibility to supply materials to pipe manufacturers anywhere
in the world.
Dow has a 25-year track record in the development of
innovative products and solutions for the global pipe market,
backed by significant R&D programmes and experts with
application-specific knowledge.
TM Trademark of The Dow Chemical Company (Dow) or an affiliated company of Dow
Winding Technology for Three-Layer Steel Pipe Coating. (Source: Dow)
-
8/10/2019 yayayaya
2/2
The principles of Responsible Care and Sustainable Development influence the production of printed literature
for The Dow Chemical Company (Dow). As a contribution towards the protection of our environment, Dows
printed literature is produced in small quantities and on paper containing recovered/post-consumer fiber and
using 100 percent soy-based ink whenever possible.
NOTICE: Any photographs of end-use applications in this document represent potential end-use applications
but do not necessarily represent curren t commercial applications, nor do they represent an en dorsement by
Dow of the actual products. F urther, these photographs are for illustration purpose s only and do not reflect either
an endorsement or sponsorship of any other m anufacturer for a specific potential end -use product or application,
or for Dow, or for specific products manufacture d by Dow.
NOTICE: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use
conditions and applicable laws may differ from o ne location to another and may chan ge with time, the Customer
is responsible for determining whether product s and the information in this document are app ropriate for the
Customers use and for ensuring that the Customers workplace a nd disposal practices are in compliance with
applicable laws and other government al enactments. Dow assume s no obligation or liability for the information
in this document. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITYOR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.
NOTICE: If products are described as experimental or developmental: (1) product specifications may not b e fully
determined; (2) analysis of hazards and cau tion in handling and use are required; (3) there is greater p otential for
Dow to change specifications and /or discontinue production; and (4) although D ow may from time to time provide
samples of such products, Dow is not obligated to supply or otherwise commer cialize such products for any use or
application whatsoever.
NOTICE REGARDING MEDICAL APPLICATION RESTRICTIONS: Dow will not knowingly sell or sample any
product or service (Product) into any commercial or developmental application that is intended for:
a. long-term or permanent contact with internal bodily fluids or tissues. Long-term is contact which exceeds
72 continuous hours;
b. use in cardiac prosthetic devices regardless of the length of time involved (cardiac prosthetic devices
include, but are not limited to, pacemaker leads and devices, artificial hearts, heart valves, intra-aortic
balloons and control systems, and ventricular bypass-assisted devices);
c. use as a critical component in medical devices that support or sustain human life; or
d. use specifically by pregnant women or in applications designed specifically to promote or interfere with
human reproduction.
Dow requests that customers considering use of Dow products in medical applications notify Dow so that
appropriate assessments may be conducted.
Dow does not endorse or claim suitability of its produ cts for specific medical applications. It is the responsibility
of the medical device or pharmaceutical manufacturer to determine that the Dow product is safe, lawful, and
technically suitable for the intended use. DOW MAKES NO WARRANTIES, E XPRESS OR IMPLIED,
CONCERNING THE SUITABILITY OF ANY DOW PRODUCT FOR USE IN MEDICAL APPLICATIONS.
Published OCTOBER, 2010.
2010 The Dow Chemical Company
Trademark of The Dow Chemical Company (Dow) or an affiliated company of DowResponsible Care is a service mark of the A merican Chemistry Council.
Dow is a partner in the A merican Chemistry Council Responsible Care initiative.
Form No. PN-003-14801
Dow is a diversified chemical company that
combines the power of science and technologywith the Human Element to constantly
improve what is essential to human progress.
The Company delivers a broad range of products
and services to customers in approximately 160
countries, connecting chemistry and innovation
with the principles of sustainability to help
provide everything from fresh water, food
and pharmaceuticals to paints, packaging and
personal care products. In 2008, Dow had
annual sales of $57.4 billion and employed
approximately 46,000 people worldwide. The
Company has 150 manufacturing sites in 35
countries and produces approximately 3,300
products. On April 1, 2009, Dow acquired Rohm
and Haas Company, a global specialty materials
company with sales of $10 billion in 2008,
98 manufacturing sites in 30 countries and
approximately 15,000 employees worldwide.
References to Dow or the Company
mean The Dow Chemical Company and its
consolidated subsidiaries unless otherwiseexpressly noted. More information about Dow
can be found at www.dow.com.
For more information about Dow products
available for plastic pipe applications, please
visit www.plasticpipes.com
ABOUT DOW
North America
U.S. & Canada 1-800-441-4369
1-989-832-1426Mexico +1-800-441-4369
Latin America
Argentina +54-11-4319-0100
Brazil +55-11-5188-9000
Colombia +57-1-219-6000
Mexico +52-55-5201-4700
Europe/Middle East +800-3694-6367
+32-3-450-2240
Italy +800-783-825
South Africa +800-99-5078
Asia Pacific +800-7776-7776
+603-7965-5392
top related