Seamless Steel Pipe Pipeline Pipe
Line pipe for oil and gas transmission with ends prepared before it leaves the mill
Specifications
Steel Pipe Plate and Coil for Power Generation and Energy Projects
Energy projects are audited on documents as much as on steel. A boiler header, a cooling water line.
Energy projects are audited on documents as much as on steel. A boiler header, a cooling water line, a coal transfer chute and a solar mounting frame all sit on the same site and every one of them has to arrive with a traceable certificate. Tianyu Metal covers that spread from one stock: seamless pipe in schedules from SCH5S to SCH160, ERW LSAW and SSAW welded pipe from 21.3mm up to 3048mm outside diameter, S550 and S690 plate for pressure and structural components, AR wear plate for coal and ash handling, and Zn-Al-Mg and galvalume coil for outdoor structures. Pipe is tested and certified to EN 10204/3.1B before it ships.
Pain Points
What Goes Wrong Buying Steel For Power Generation and Energy
Pipe Certificates Rejected at the Site Gate
A line without an acceptable certificate sits in the laydown yard until it is replaced. ERW LSAW and SSAW pipe is issued against EN 10204/3.1B with chemical analysis tensile yield and elongation results plus hydrostatic and X-ray testing on the welded grades.
Diameter Ranges Split Across Two Suppliers
Small bore instrument and service lines and large bore circulating water lines rarely come from one source. Seamless covers 1/2 inch to 48 inch, ERW covers 21.3-660.4mm, LSAW covers 355.6-1820mm and SSAW covers 219.1-3048mm from the same order desk.
Wall Thickness Called Out in Schedules Not Millimeters
Piping drawings specify SCH40 or SCH80 and a mill quoting only in millimeters forces a conversion exercise. Seamless pipe is supplied across SCH5S SCH10S SCH20S SCH20 SCH30 STD SCH40 SCH60 SCH80 SCH100 SCH140 SCH160 and XS, equal to 1.65-80mm wall.
Coal and Ash Handling Chewing Through Mild Steel
Fine abrasive dust in transfer points and cyclone linings cuts mild steel faster than a maintenance cycle allows. AR plate in 2-100mm carries wear resistance stated at 15-20 times ordinary steel plate and is recommended for service at or below 600 degrees Celsius.
Solar Mounting Corroding Before the Plant Pays Back
A ground mounted array is expected to stand for decades in weather. Zn-Al-Mg coating adds aluminum magnesium and silicon to the zinc and is stated at 10-20 times the corrosion resistance of ordinary galvanized product, with galvalume as the alternative for exterior paneling.
Cut Ends and Coatings Done Twice
Pipe that arrives plain then has to be beveled and coated on site adds two trades to the critical path. Bevel ends plain ends caps and 3PE fusion bond epoxy coal tar epoxy or bitumen coating can be applied before loading.
Requirements
What This Sector Needs From a Steel Supplier
- Seamless and welded pipe on one order covering small bore service lines through large bore circulating water lines
- EN 10204/3.1B certification with chemical analysis mechanical results flattening bending impact hydrostatic and X-ray testing
- S550 and S690 plate at 550 and 690 MPa minimum yield for boiler pressure vessel and power station structural components
- AR400 AR500 and AR600 wear plate cut to the chute and hopper liner panels used in coal and ash handling
- Zn-Al-Mg and galvalume coil with Z40 to Z350 coating weights for solar mounting and outdoor enclosures
- Anticorrosive coating and end preparation applied before shipment rather than on site
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SpecificationsTypical Applications
Where the Material Ends Up
Boiler and Pressure Part Supports
S690 and S550 plate for power station equipment medium and high pressure boiler structures high pressure vessels and the frames that carry them.
Circulating and Cooling Water Lines
SSAW pipe from 219.1mm to 3048mm outside diameter in 4-30mm wall with 3PE or fusion bond epoxy for buried and exposed runs.
Steam Condensate and Service Piping
Seamless pipe to ASTM A106 A53 and API 5L in SCH40 through SCH160 with bevel ends for the welding crew.
Coal Ash and Biomass Handling
AR400 AR500 and AR600 liner panels for transfer chutes hoppers and cyclone linings cut bent and punched to the liner drawing.
Solar Mounting and Site Structures
Galvanized square and round pipe with Zn-Al-Mg and galvalume coil for mounting rails cable trays and outdoor enclosure panels.
Chemical and Process Lines on Plant
Stainless seamless pipe in TP304 TP316L and TP321 to ASTM A312 and A213 where the medium rules out carbon steel.
How an Order Runs
From Enquiry To Delivered Material
Line List and Drawing Intake
Send the line list or the structural drawing with diameters schedules grades and coating called out. We answer per line item rather than per tonne.
Product Route Selection
Seamless where pressure rules, ERW for the mid diameters, LSAW where wall goes to 50mm and SSAW where diameter goes past 1820mm.
Grade and Standard Confirmation
API 5L X42 through X65, ASTM A106 A53 and A333, EN S275 and S355 grades or GB L245 through L555 are fixed against the specification before rolling.
Manufacturing and Testing
Chemical analysis tensile yield and elongation, flattening bending blow and impact tests, exterior size inspection, hydrostatic test and X-ray on the submerged arc welded grades.
End Preparation and Coating
Bevel end over 2 inch or plain end at 2 inch and below, plastic caps or screwed and socket ends, with 3PE fusion bond epoxy coal tar epoxy bitumen varnish or polyurethane foam insulation.
Certificate Issue
EN 10204/3.1B is issued for pipe and a mill test certificate for plate and coil, with ISO9001 BV SGS and API 5L certification on file for the LSAW line.
Bundling and Loading
Pipe is cut to 5.8m 6m 12m fixed or 2-12m random, bundled by diameter and loaded so the coating survives the voyage.
Delivery Capability
What We Commit To on Shipment
- Fixed lengths at 5.8m 6m and 12m or random 2-12m so the pipe suits your welding spread and your container
- End caps and coating applied before loading so the first site operation is fit up rather than surface preparation
- EN 10204/3.1B certificates and mill test certificates released with the shipping documents under TT or LC terms
- Container loading for small diameter pipe and break bulk for large diameter LSAW and SSAW lengths
- Export shipments to Southeast Asia South America and Africa
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Read moreQuestions Buyers Ask
Power Generation and Energy Steel Supply FAQ
What diameter range can you cover for a plant piping package?
Seamless runs 1/2 inch to 48 inch, ERW runs 21.3mm to 660.4mm, LSAW runs 355.6mm to 1820mm and SSAW runs 219.1mm to 3048mm. That covers instrument lines through circulating water headers without changing supplier.
What certificate do you issue for welded pipe?
EN 10204/3.1B, supported by chemical component analysis, tensile yield and elongation results, flattening bending blow and impact tests, exterior size inspection and a hydrostatic test, with X-ray testing on the LSAW and SSAW product.
Can you supply pipe already coated?
Yes. Fusion bond epoxy, coal tar epoxy, 3PE, varnish, bitumen and black oil coatings are applied to the customer requirement, and polyurethane foam insulation is available on seamless line pipe.
Which plate grade suits boiler and power station structures?
S550 and S690 are the usual choices at 550 and 690 MPa minimum yield in thicknesses to 100mm, supplied quenched and tempered hot rolled or normalized. They are used for power station equipment medium and high pressure boilers and high pressure vessels.
Do you supply liner plate for coal handling as finished panels?
Yes. AR plate in 2-100mm is cut bent and punched to the liner drawing and can be fixed by welding plug welding or bolting, so a shutdown crew fits panels instead of fabricating them.
What coating do you recommend for solar mounting steel?
Zn-Al-Mg coil where corrosion resistance decides the life of the array, since the zinc aluminum magnesium and silicon coating is stated at 10-20 times ordinary galvanized product, or galvalume where the part is an exterior panel rather than a load carrying rail.
Sourcing Steel For Power Generation and Energy
Seamless and welded pipe on one order covering small bore service lines through large bore circulating water lines Send that with the sizes and quantity and we will confirm availability and what the certificate covers.