PRIME STEEL PIPE

2015/12/17

ASTM A355 Seamless Alloy Steel Pipe

Astm a335 standard specication for seamless ferritic alloy-steel pipe for high-temperature service. This specication covers nominal(average) wall seam-less alloy-steel pipe intended for high-temperatureservice.Pipe ordered to this specication shall be suitable for bending,anging(vanstoning),and similar forming operations,and for fusion welding.Selection will depend upon design,service conditions,mechanical properties,andhigh-temperature char-acteristics.

Chemical Composition

Grade	C	Mn	P	S	Si	Mo
P1	0.10-0.20	0.30-0.80	0.025	0.025	0.10-0.50	0.44-0.65
P2	0.10-0.20	0.30-0.61	0.025	0.025	0.10-0.30	0.44-0.65
P5	0.15max	0.30-0.60	0.025	0.025	0.50max	0.45-0.65
P5b	0.15max	0.30-0.60	0.025	0.025	1.00-2.00	0.45-0.65
P5c	0.12max	0.30-0.60	0.025	0.025	0.50max	0.45-0.65
P9	0.15max	0.30-0.60	0.025	0.025	0.25-1.00	0.90-1.10
P11	0.05-0.15	0.30-0.60	0.025	0.025	0.50-1.00	0.44-0.65
P12	0.05-0.15	0.30-0.61	0.025	0.025	0.50max	0.44-0.65
P15	0.05-0.15	0.30-0.60	0.025	0.025	1.15-1.65	0.44-0.65
P21	0.05-0.15	0.30-0.60	0.025	0.025	0.50max	0.80-1.06
P22	0.05-0.15	0.30-0.60	0.025	0.025	0.50max	0.87-1.13
P23	0.04-0.10	0.10-0.60	0.030max	0.010max	0.50max	0.05-1.30

Mechanical Properties

Mechanical properties	P1,P2	P12	P23	P91	P92,P11	P122
Tensile strength	380	415	510	585	620	620
Yield strength	205	220	400	415	440	400

What is API 5L Line Pipe?

LINE PIPE:

Line Pipe is one of the transportation method used for transporting oil, natural gas and water through pipeline to the oil and gas industry.

Line Pipe Type: Seamless Steel Pipe, Welded Steel Pipes
Line Pipe Ends Type: Plain Ends, Threaded Ends, Socket Ends
Line Pipe Connection Type: Welding Connection, Coupling Connection, Socket Connection
API 5L Line Pipe Steel Grade: GR.B, X42, X52, X60, X65, X70, L245, L290, L320, L360, L450, L485
API 5L Line Pipe Specification:

-Seamless Steel Pipe Specification: Outside Diameter: 10.3mm ~ 1016mm, Wall Thickness: 1.7mm ~ 52mm;

- ERW Steel Pipe Specification: Outside Diameter: 21.3mm ~ 660mm, Wall Thickness: 1mm ~ 20mm;

- LSAW Steel Pipe Specification: Outside Diameter: 406mm ~ 1626mm, Wall Thickness: 6.0mm ~ 75mm;

- SSAW Steel Pipe Specification: Outside Diameter: 219mm ~ 4060mm, Wall Thickness: 3.2mm ~ 40mm;

API 5L LINE PIPE STANDARD:

ISO 3183 / API 5L Line Pipe Standard is one of the most significant international standards in the oil and gas pipeline industry. Nowadays, API 5L Line Pipe Standard is widely applied all over
the world. Jointly completed by ISO and American Petroleum Institution, the 44th Edition ISO 3187:2007 / API Spec 5L Line Pipe Standard has caused widespread impact internationally. The revision was launched in April 2010, collected and processed more than 400 comments all over the world. At the end of 2012, the edition API 5L Line Pipe Standard was formally approved,
and it was formally released on February 18, 2013. Compared with the previous edition, ISO 3183:2012 / API Spec 5L Line Pipe (45 edition) has added two technical appendices which are
Appendix M: European Onshore Natural Gas Pipeline PSL2 Steel Pipe Order and Appendix P: Threaded and Coupled Calculation Formula, Guide Bending and Charpy Impact Calculation
Background. Besides, in the new edition of API 5L Line Pipe Standard, there are few technological changes such as manufacturing processes, performance indicators, test methods.
The new API 5L Line Pipe Standard is more perfect and science after a lot of editorial changes and textual representation of adjustment.

API 5L LINE PIPE PSL1 & PSL2:

API 5L Line Pipe Standard has put forward specific requirements on the manufacturing of seamless and welded steel pipe including two steel pipe specification level (PSL1 and PSL2). API 5L
Line Pipe is widely used for petroleum and natural gas industry pipeline transportation systems, but this API 5L Line Pipe criterion is not suitable for the cast iron pipe. PSL is the abbreviation
of Product Specification Level which is the quality level of API 5L Line Pipe. API 5L Line Pipe has two standards which are PSL1 and PSL2. Although these two standard only have one word
difference, the content is very different. PSL2 is a higher quality level than PSL1. Both standard level have different levels of inspection requirements, chemical composition requirements,
mechanical properties requirements, mechanical properties requirements. When making order follow the API 5L Line Pipe Standard, the purchaser need to indicate the level of standard
(PSL1 or PSL2) regard of the basic contract terms such as product specification, steel grades, order quantity etc. In general condition, if the contracts do not mention the standard level,
the manufacturer will produce in accordance with the standard of PSL1. To be more specify, the differences are including:

1. Pipeline Hydro-static Test should be done piece by piece, and the API 5L Line Pipe Standard does not specify to allow non-destructive alternative hydro-static testing.
2. Impact performance test is necessary for PSL2 standard, while PSL1 is not necessary for this type of test. 3. Non-destructive Test should be applied for PSL 2 standard pipe piece by piece, while for PSL1 standard is not required.

API 5L Line Pipe Standard is similar to the Chinese Standard GB/T9711. API 5L Line Pipe PSL1 is equivalent to the GB/T9711.1. Compared with API 5L Line Pipe PLS1, API 5L Line Pipe
PSL2 standard level requires more impact energy experiments, so the production time and production cost for the manufacturers will increase. Besides, API 5L Line Pipe PSL2 standard
requires a higher quality level of raw materials for producing steel pipes, the raw materials ordering time will be longer than the PSL1 standard steel pipe raw materials. Moreover, in order
the reach the quality standard of PSL2 and also control the production cost of the factory, the manufacturer will set up a higher level of minimum order quantity for the purchasers. For
API 5L Line Pipe PSL2, some time purchasers will request for following NACE standard which means during the production the manufacturers have to add hardness and acid resistance test
for the pipes to reach a even higher quality level of steel pipes.

Tolerance of Outside Diameter

Standard	Out Diameter	Tolerance of Pipe End	Tolerance of Pipe Body
API 5L	219.1～273.1	+1.6mm, -0.4mm	±0.75%
	274.0～320	+2.4mm, -0.8mm	±0.75%
	323.9～457	+2.4mm, -0.8mm	±0.75%
	508	+2.4mm, -0.8mm	±0.75%
	559～610	+2.4mm, -0.8mm	±0.75%

Tolerance of Wall Thickness

Standard	Grade	Out Diameter	Wall Thickness
API 5L	A	219.1～457	+15%, -12.5%
	B	508～610	+17.5%, -12.5%
	X42-X80	508～610	+19.5%, -8%

Chemical Analysis & Mechanical Properties

Standard	Class	Grade	Chemical Analysis(%)				Mechanical Properties(min)(Mpa)
Standard	Class	Grade	C	Mn	P	S	Tensile Strength	Yield Strength
API 5L	PSL1	B	0.26	1.20	0.030	0.030	414	241
		X42	0.26	1.30	0.030	0.030	414	290
		X46	0.26	1.40	0.030	0.030	434	317
		X52	0.26	1.40	0.030	0.030	455	359
		X56	0.26	1.40	0.030	0.030	490	386
		X60	0.26	1.40	0.030	0.030	517	414
		X65	0.26	1.45	0.030	0.030	531	448
		X70	0.26	1.65	0.030	0.030	565	483
	PSL2	B	0.22	1.20	0.025	0.015	414	241
		X42	0.22	1.30	0.025	0.015	414	290
		X46	0.22	1.40	0.025	0.015	434	317
		X52	0.22	1.40	0.025	0.015	455	359
		X56	0.22	1.40	0.025	0.015	490	386
		X60	0.22	1.40	0.025	0.015	517	414
		X65	0.22	1.45	0.025	0.015	531	448
		X70	0.22	1.65	0.025	0.015	565	483
		X80	0.22	1.85	0.025	0.015	621	552

UAE Clients visit for Stainless Steel Pipe and Fittings

Warmly welcome our UAE clients visit our company for our future cooperation.

Shinestar Holdings Group has the ability to offer you stainless steel pipes and fittings. We are specialized in offering combined project solution for stainless steel pipes and fittings. Stainless steel pipe is an important product in the steel industry, and it is widely applied in the national economy. Such as widely used in hot and cold water transmission, drinking water supplying, heating equipment, air conditioning facilities, fire protection, gas and other civil low pressure liquid, petroleum, chemicals pharmaceuticals, beverages transportation. Because the stainless steel tube / stainless steel pipe is a hollow cross-section, it is suitable for liquids, gases and solids pipelines. Compared with other type of steel pipe, stainless steel pipe has largebending torsional strength, so it has become an important material for mechanical and architectural structures. 304 stainless steel pipe is widely used in curtain wall, side walls, roof and other construction purposes. In certain atmosphere, 316 stainless steel pipe is better. Stainless Steel Pipe and Stainless Steel Tube is safe and reliable, simple and convenient pipeline, it has more irreplaceable advantages.

304 Stainless Steel Pipes and Tube USE:

A269 : Seamless and Welded Austenitic Stainless Steel Tubing for General Service

A312 : Seamless,Welded and Heavily Cold Worked Austenitic Stainless Steel Pipes

A213 : Seamless Ferritic and Austenitic Alloy-Steel Boiler,Superheater,and Heat-exchanger tubes

304 Stainless Steel Pipes and Tube Weight Count:(Just for 304)

Weight(Kg/M)=(D-S)*S*0.02490

D:Outside Diameter S:Wall-Thickness

304 Stainless Steel Pipes Chemical Requirements
	C max	Mn max	P max	S max	Si	Cr	Ni	Mo	N
304	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	...	...
304L	0.035	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	...	...
304H	0.04-0.10	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	...	...
304N	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	...	0.10-0.16
304LN	0.035	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	...	0.10-0.16

304 Stainless Steel Pipe Mechanical Test
	Tensile(Mpa)	Yeild(Mpa)	Elongation(%)	Hardness
304	515	205	35	90HRB
304L	485	170	35	90HRB
304H	515	205	35	90HRB
304N	550	240	35	90HRB
304LN	515	205	35	90HRB

Packing:Delivery Condition :

As different requirements,It including bright annealing,pickling,etc.

1.Standard Packing
2.Woodbox Packing

Other Test:
1.Hydrostatic or Nondestructive Electric Test
2.Marking
3.Grain Size,etc

Structural Steel Pipe Standard

Structural Steel Pipe can accommodate many different applications including bollards and bumper posts, structural columns, shoring, fencing, piling, racks and rollers. Structural Steel Pipe
mainly used for factories, bridges, ships and other structures. Structure Steel Pipe includes various seamless steel pipe or welded steel pipe for structure, pile pipe, large diameter seamless
steel pipe, large diameter submerged arc welded steel pipe, large diameter seamless steel pipe, large diameter thick wall thickness steel pipe etc.

STANDARD:

Chinese National Standard: GB/T8162

American Society for Testing and Materials Standard: ASTM A53

American Boiler and Pressure Vessel Code: ASME SA53

STEEL GRADE: 10 ,20 ,35, 45, Q345, 15CrMo, 12Cr1MoV, A53A, A53B, SA53A, SA53B

Seamless Steel Pipe for Structure:

Seamless Steel Pipe for Structure is used seamless steel pipes or seamless steel tubes for general structure and mechanical structure. For the manufacturer of pipes, containers,
equipment, fittings and mechanical structure seamless steel pipe.
Specification:
Outside Diameter: 10.3mm ~ 1013mm
Wall Thickness: 1.7mm ~ 52mm

Welded Steel Pipe for Structure:

Welded steel pipe used in steel structures, bridges, support, building structure pipe, pile pipe. Since the structure steel pipe or structure steel tube requires a lot of pressure.
Structural steel pipe requires high pressure capabilities which means only the steel pipes has greater wall thickness (> 8mm) can be applied as structure steel pipe.
Type of Pipes:
1. LSAW Steel Pipe - Logitudinal Submerged Arc Welded Steel Pipe
2. SSAW Steel Pipe - Spiral Submerged Arc Welded Steel Pipe
3. SAWH Steel Pipe - Submerged Arc Welded Helical Steel Pipe
Specification:
LSAW Steel Pipe: Outside Diameter: 406mm ~ 1625mm, Wall Thickness: 6.0mm ~ 75mm
SSAW Steel Pipe/SAWH Steel Pipe: Outside Diameter: 219mm ~ 4064mm, Wall Thickness: 3.2mm ~ 40mm

The difference between hot-dipped galvanized steel pipe & cold galvanized steel pipe

Galvanized Steel Pipe

In order to improve the corrosion resistance of the steel pipe, in general people will coated the steel pipe with zinc. Galvanized steel pipe is mainly used for transporting gas and heating.
If use galvanized steel pipe as water pipes for drinkable water, after many years of application, it turns out there are many rust inside the steel pipe which will influence the quality of the
drinking water.

Galvanized Steel Pipe Weight Formula: ( Outside Diameter - Wall Thickness) x Wall Thickness x 0.02466 * 1.0599 = Weight per Meter (kg / m)

There are two types of galvanized steel pipe in the market which is divided by the production processes.

Hot-dipped Galvanized Steel Pipe:

Hot-dipped zinc coating is the molten metal to react with the iron matrix alloy layer. So the substrate and the zinc coating combined well. The first production step is pickling the steel pipe.
In order to remove the surface of the iron oxide, cleaning bath by mixing an aqueous solution of ammonium chloride or zinc chloride aqueous solution for the after pickling steel pipe is
needed. And then the steel pipe is allowed to put in the hot dip tank. The using advantage for hot dipped galvanized steel pipe is the coating has strong adhesion and long using life.
Applying hot-dipped galvanizing process, the zinc coating will be combined with the surface of the steel pipe evenly.

Production Process:

Material Inspection (Steel Pipe) --- Hanging --- De-greasing --- Rinsing --- Pickling --- Washing --- Dipping Fluxing --- Hot Air Drying --- Inside and Outside Hot-dipped Galvanizing Blow
--- Cooling --- Passivation and Rising --- Unloading --- Inspection and Trimming --- Type Identification --- Packaging and Storing and Transportation.

Cold Galvanized Steel Pipe:

Cold Galvanizing process is also named as electro-galvanizing process which is using cold plates as raw material. Cold Galvanized Steel Pipe has very few zinc coating which is only around
10 ~ 50 g/m2. Compared with hot-dipped galvanized steel pipe, the corrosion resistance of cold galvanized steel pipe is not as good as hot-dipped galvanized steel pipe.
In order to ensure the quality of the galvanized steel pipe, most of the galvanized steel pipe manufacturers will not apply the electro galvanizing producing process. Only those small and
outdated manufacturers still use electro-galvanizing producing process to offer relatively cheaper galvanized steel pipe. Since the zinc layer for cold galvanized steel pipe is electroplated layer,
it is the individual layered zinc coating on the steel pipe, so the coating layer will be peel off easily. Overall, the producing cost for cold galvanized steel pipe is lower than hot-dipped
galvanized steel pipe, and the manufacturer can offer the purchaser a very competitive market price. However, the surface of the coating is uneven which influence the corrosion resistance
of the galvanized steel pipe.

Production Process:

Uncoiling (Galvanized Steel Strips/Plates) --- Leveling --- Welding --- Scraping the Scar --- Passivation and Rinsing --- Zinc adding --- Setting/Forming --- Type Identification --- Cutting
--- Packing --- Drying --- Weighed

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