ASTM A270 TP304 Sanitary Stainless Steel Seamless Pipe Polished Surface

• Customization: Available
• Application: Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry
• Certification: ISO9001
• Model NO.: A270 TP304
• Material: 304 Stainless Steel
• Outer Diameter: 2 inch
• Type: Seamless Pipe
• Wall Thickness: Schedule 10
• Test: Ht/Et/Ut
• Delivery Time: Stock 7 Days; Mto 30 Days
• Trade Terms: EXW, Fob, CFR, CIF etc.
• Markings: According to A999/A999m
• Transport Package: Packed in Bundles or Plywooden Box
• Specification: BA TP304 Sanitary Tube
• Trademark: GH-STEEL
• Origin: China
• HS Code: 7304419000
• Production Capacity: 2000ton Per Month

Product Description

Product Description

ASTM A270 standard covers the specifications for sanitary seamless and welded tubing. Typically made from austenitic stainless steel such as SS304 or SS316L  with common sizes include 1/2 inch to several inches in diameter, which offers excellent corrosion resistance and sanitation properties. They usually have a smooth interior finish, often polished to a 20 Ra or better, which minimizes the risk of contamination and biofilm growth. It's recognized for meeting hygienic and sanitary requirements, making it suitable for applications in high-purity environments.

Product Parameters

Product Name	SML Seamless Stainless Steel Sanitary Pipes /Tubes
Company Inform	1.Name:WENZHOU GUOHAO STEEL., LTD   2.Type: Manufacturer
Material	TP304
Standard	ASTM A270
Specification	Outer diameter	1/2" - 2 1/2"
	Wall thickness	0.049" - 0.15" (1.24mm-3.81mm)
	Length	Single random length/ Double random length or as customer's actual request
Surface	1. The following surface finishes may be specified: 1.1 Mill Finish-A finish without additional polishing or operations intended to smooth the surface. 1.2 Mechanically Polished Surface Finish-The purchaser may specify one of the following finish numbers for a mechanically polished surface: 1.2.1 Finish No. 80-A ground finish produced by polishing a tube with an abrasive media impregnated with No. 80 grit. 1.2.2 Finish No. 120-A ground finish produced by polishing a tube with an abrasive media impregnated with No. 120 grit. 1.2.3 Finish No. 180-A ground finish produced by polishing a tube with an abrasive media impregnated with No. 180 grit. 1.2.4 Finish No. 240-A ground finish produced by polishing a tube with an abrasive media impregnated with No. 240 grit. 1.2.5 Other mechanically polished finishes may be agreed upon between the purchaser and manufacturer. 1.3 Electropolished Finish-A bright reflective finish produced by electropolishing. The manufacturer may use other polishing operations prior to electropolishing. 1.4 Maximum Roughness Average (Ra) Surface Finish-The customer may specify a maximum Ra on the inside surface, outside surface, or both. The measurement of surface roughness shall be in accordance with ASME B46.1. 1.4.1 When no agreement is made regarding Ra measurement of a longitudinally polished tube, disputes shall be resolved using measurements made in accordance with ASME B46.1. 2. The manufacturer shall select a manufacturing method to produce the specified finish. The operations may or may not include polishing. 2.1 The purchaser may specify the polishing type for either the inside surface, outside surface or both for the final desired effect. 2.1.1 Longitudinally Polished Finish-It is usually performed on the inside surface only. 2.1.2 Circumferential (Rotary) Polished Finish-This can be performed on either the inside surface, outside surface, or both. 2.1.3 When the surface is finished by circumferential mechanical polishing, the Ra measurement shall be measured in the longitudinal direction. Roughness measurement of a longitudinal mechanical polished surface shall be a matter of agreement between the manufacturer and the purchaser. 3. Acceptance criteria for minor surface imperfections shall be a matter for agreement by the manufacturer and the purchaser. 4. Combinations of the above finishes for internal and external surfaces may be specified. When tubes are polished only on one surface, the other surface may be the regular mill finish.
Heat Treatment	1.1 All material shall be furnished in heat-treated condition. The heat treatment procedure, except for S31803, S32003, S32205, S32750, N08926 and N08367, shall consist of heating the material to a minimum temperature of 1900 °F [1040 °C] and quenching in water or rapid cooling by other means. 2.2 N08926 shall be heat-treated to a minimum temperature of 2010 °F [1100 °C] followed by quenching in water or rapidly cooling by other means. UNS N08367 should be solution annealed from 2025 °F [1110 °C] minimum followed by rapid quenching. 3.3 S31803 and S32205 shall be heat-treated in a temperature range of 1870 °F [1020 °C] to 2010 °F [1100 °C] followed by quenching in water or rapidly cooling by other means. 4.4 S32750 shall be heat-treated in a temperature range of 1880 °F [1025 °C] to 2060 °F [1125 °C] followed by quenching in water or rapidly cooling by other means. 4.5 S32003 shall be heat-treated in a temperature range of 1850 °F [1010 °C] to 2010 °F [1100 °C].
Thinkness Tolerance	+/-0.02mm
Length  Tolerance	+/- 5mm
End	PE (Plain Ends) ,BE (Beveled Ends)
Technique	Cold Drawn
Test	Testing includes reverse bend, reverse flattening, and flange tests. Eddy current testing is performed on 100% of the sanitary tube produced.
Packing	Unless otherwise specified in the order, all tubing shall be protected for shipment by bundling, paper or burlap wrapping, or boxing at the discretion of the manufacturer.
Delivery Time	1.for ready stock :7 days after receiving the deposit of T/T 2.For MTO: 35 days after receiving the  deposit of T/T
Trade Terms	EXW,FOB, CFR, CIF etc.
Loading Port	Ningbo/Wenzhou/Shanghai
Remittance method	TT/LC/CASH
Container	20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 54CBM 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) 68CBM
Application	Widely used in petroleum,foodstuff,chemical industry,construction, electric power,nuclear energy,machinery,shipbuilding,boiler fields and environmental protection industry.

 

EQUIVALENT GRADE OF ASTM A270 TP304  STAINLESS STEEL SANITARY TUBE

Grade	Unified Numbering System	Old British		Euronorm		Swedish SS	Japanese Industrial Standards
		British Standards	European Standards	No	Name
TP304	S30400	304S31	58E	1.4301	X5CrNi18-10	2332	SUS 304

 

CHEMICAL COMPOSITION OF ASTM A270 TP304  STAINLESS STEEL SANITARY TUBE

Element		C, max	Mn, max	P, max	S, max	Si, max	Ni	Cr
TP304	S30400	0.080	2.00	0.045	0.030	1.00	8.0–11.0	18.0–20.0
TP304L	S30403	0.035	2.00	0.045	0.030	1.00	8.0–12.0	18.0–20.0

MECHANICAL PROPERTIES OF OF ASTM A270 TP304  STAINLESS STEEL SANITARY TUBE

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell B (HR B) max
TP316	515	205	35	90
TP316L	485	170	35	90

ASTM A270  STANDARD TOLERANCE 

OD	Tolerance	WT Tolerance	Length Tolerance
≤ 1" (25.4mm)	±0.005" (0.13mm)	± 10%	+1/8″ (3.2mm) / -0
> 1"(25.4mm), ≤ 2"(50.8mm)	±0.008"(0.20mm)	± 10%	+1/8″ (3.2mm) / -0
> 2"(50.8mm), ≤3"(76.2mm)	±0.010(0.25mm)	± 10%	+1/8″ (3.2mm) / -0
>3"(76.2mm), ≤4"(101.6mm)	±0.015"(0.38mm)	± 10%	+1/8″ (3.2mm) / -0
>4"(101.6mm), < 5 1/2"(139.7mm)	±0.015"(0.38mm)	± 10%	+3/16"(4.8mm) / -0
>5 1/2"(139.7mm), ≤ 8"(203.2mm)	±0.030"(0.76mm)	± 10%	+3/16"(4.8mm) / -0
>8"(203.2mm), <12"(304.8mm)	± 0.050"(1.27mm)	± 10%	+3/16"(4.8mm) / -0

 

Company Profile

Wenzhou Guohao Steel was established in 2008. We are ISO 9001:2015 approved manufacturer, having a state-of-the-art infrastructure facility for having smooth production process. It has successfully grown by focusing on serving customers across a range of high technology industries.Guohao Steel now has the whole of manufactured stainless steel products to add to its already large range of High Performance Nickel Alloys.
Guohao Steel adhere to the high standards of integrity and compliance required, including:
Environmental standards/ Health and safety standards/Ethical trading standards /Export compliance requirements
We now stock and have direct access to a wide range of other materials, including stainless steels and nickel alloys. We supply and process pipes for numerous key industry sectors, collaborating with both small businesses and large international manufacturers across various countries. Due to our reputation for quality, reliability, and industry approvals, we are a well-regarded supplier in diverse sectors. 

 

Packaging & Shipping

1. All of our stainless steel seamless pipe & tubes are packaged as per international standard to prevent any possible damage or loss. By default, we will use thick woven plastic bag to bundle the finished pipes together in batches.
2. For some special pipes & tubes that are vulnerable to dirt, scratches, stress or rough handling, we will suggest wooden case for protection. Kindly note, wooden case can incur extra cost, not only its own cost, but also the increased freight cost, which is especially true for air transportation.
3. For enhanced customer experience, we also provide dedicated package as per your special requirements.

 

Certifications

The inspection of our company and products is open to customers themselves or their designated third-party inspectors, such as SGS, BV, TUV, DNV, etc., who are well-known in the industry.

PRODUCT APPLICATION

• Food processing equipment, particularly in beer brewing, milk processing & wine making.
• Kitchen benches, sinks, troughs, equipment and appliances
• Architectural panelling, railings & trim
• Chemical containers, including for transport
• Heat Exchangers
• Oil and gas 

 

Our Advantages

FAQ

1.Q: Do you provide customized product services?
A: Of course, we can design and produce the products you need based on your specifications and drawings. For example: special dimensions, special controls, OEM, etc.

2.Q: Are you a manufacturer or trader?
A: We are manufacturers. We have our own factory to produce and process various kinds of stainless steel /nickel alloy pipes.

3.Q: Can we get the some samples?Is there a charge?
A: Yes, we will provide you with the samples you want. The samples are free of charge, but the customer may have to pay the freight.

4.Q: Can we visit your factory?
A: Of course, we welcome you to visit our factory on-site or visit our production line through online videos to learn more about our strength and quality. Once we have your schedule, we will arrange a professional sales team to follow up with you.

5.Q: How do you ensure the quality of the product?
A: All products must undergo three inspections throughout the entire manufacturing process, including production, cutting, and packaging. The factory inspection report is provided with the goods. If necessary, third-party inspections such as SGS can be accepted.

6.Q: What is your delivery time?
A: Different products and procurement quantities have different delivery times. The product will be delivered as soon as possible on the basis of quality assurance. Usually, if the goods are in stock, it takes 3-10 days. Alternatively, if the goods are out of stock, it will take 25 to 45 days.

7.Q: Can you arrange shipment?
A: Of course, we have freight forwarders who have been cooperating for many years. We are VIP and can provide you with the most favorable prices and professional services.

8.Q: What if I don't have import experience?
A: We have rich export experience. As long as you have an import license, please leave the rest to us! We will help you choose the most suitable transportation service to safely and accurately deliver the product to the place where it is needed.