ASTM A213 / ASME SA213 TP304 TP304H Stainless Steel Seamless Tube 3/4" 16 BWG 20FT

• Customization: Available
• Type: Seamless Pipe, Stainless Steel Pipes
• Standard: ASTM, AISI, GB, EN, GOST 9941-81
• Model NO.: 3/4" 16 Bwg 20FT
• Grade: 300 Series
• Certification: ISO
• Shape: Round
• Technique: Cold-Drawing
• Surface Treatment: AP/BA/Polishing/Sand Blasting/Shot Blasting
• Material: 304 Stainless Steel
• Outer Diameter: 1/8inch-24inch
• Wall Thickness: Sch10s~Sch160
• Length: Random Length or Fixed Length
• Test: HT/ET/UT
• Delivery Time: Stock 7 Days; MTO30 Days
• Trade Terms: EXW, FCA, FOB, CFR, CIF etc.
• Markings: According to A999/A999m
• Transport Package: Packed in Bundles or Plywooden Box
• Specification: 3/4" 16 BWG 20FT
• Trademark: GH-STEEL
• Origin: China
• HS Code: 7304419000
• Production Capacity: 2000ton Per Month

Product Description

Product Description

Product Name	Stainless Steel Seamless Pipes /Tubes Труба Сталь конструкционная криогенная Tubería de acero inoxidable sin costura Tubos de Aço Inoxidável sem Costura Tubo INOXIDABLE SIN COSTURA
Company Inform	1.Name:WENZHOU GUOHAO STEEL., LTD   2.Type: Manufacturer
Material	Austenitic: TP304, TP304L, TP304H
Standard	ASTM A312,ASTM A213,ASTM A269
Specification	D(Outer Diameter)	6mm-630mm ; 1/8inch-24inch
	T(Wall Thickness)	0.89mm-40mm SCH 5, SCH 10, SCH 40, SCH 80, SCH 160, SCH XXS 10 BWG, 12 BWG, 14 BWG , 16 BWG, 18 BWG, 20 BWG 10 SWG, 12 SWG, 14 SWG , 16 SWG, 18 SWG, 20 SWG
	L(Length)	Random length 5~7m Fixed length 6m /6.096m /6.1m/12m  or as customer's actual request
Surface	Annealing&Pickling Polishing(180#-600#) Bright Annealing Sand Blasting Shot Blasting
Pipe End	Plain End (PE) Bevelled End (BE) Threaded End (TE)
Markings	GH-STEEL S.S SMLS TUBE  ASTM A269 TP304L 3/4" 16 BWG HEAT NO.*********** Markings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer's private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304H, TP316H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.
Flattening Test	For material heat treated in a continuous furnace flattening tests shall be made on a sufficient number of pipes to constitute 5% of the lot, but in no case less than 2 lengths of pipe.
Hydrostatic or Nondestructive Testing	Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test
Value Added Services	Customize Length, Bending, Polishing, Shot Blasting, Drilling/Punching, Degreasing
Delivery Time	For ready stock :7 days after receiving the deposit of T/T 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
Referenced Documents	ASTM Referenced Standards A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels A370 Test Methods and Definitions for Mechanical Testing of Steel Products A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys A999/A999M Specification for General Requirements for Alloy and Stainless-Steel Pipes A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless-Steel Tubes E112 Test Methods for Determining Average Grain Size E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

Product Parameters

Euivalent Grades of  SS 304 / 304L / 304H Stainless Steel Seamless Tubes Pipes

STANDARD	WERKSTOFF NR.	UNS	JIS	AFNOR	BS	GOST	EN
SS 304	1.4301	S30400	SUS 304	Z7CN18‐09	304S31	08Х18Н10	X5CrNi18-10
SS 304L	1.4306/1.4307	S30403	SUS 304L	Z3CN18‐10	304S11	03Х18Н11	X2CrNi18-9 / X2CrNi19-11
SS 304H	1.4301	S30409	-	-	-	-	-

Chemical Composition of  SS 304 / 304L / 304H Stainless Steel Seamless Tubes Pipes

Grade		Ni	Mn	P	C	S	Si	Cr	N
304	min.	8.0	-	-	-	-	-	18.0	-
	max.	10.5	2.0	0.045	0.08	0.030	0.75	20.0
304L	min.	8.0	-	-	-	-	-	18.0	-
	max.	12.0	2.0	0.045	0.030	0.030	0.75	20.0	0.10
304H	min.	8.0	-	-	0.04	-	-	18.0	-
	max.	10.5	2.0	0.045	0.10	0.030	0.75	20.0

Mechanical Properties of  SS 304 / 304L / 304H Stainless Steel Seamless Tubes Pipes

Grade	Tensile Strength (MPa) min	Elongation (% in 50mm) min	Yield Strength 0.2% Proof (MPa) min	Hardness
				Rockwell B (HR B) max	Brinell (HB) max
304	515	40	205	92	201
304L	485	40	170	92	201
304H	515	40	205	92	201

Physical Properties of  SS 304 / 304L / 304H Stainless Steel Seamless Tubes Pipes

Grade	Density (kg/m3)	Specific Heat 0-1000C (J/kg.K)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (m/m/0C)			Thermal Conductivity (W/m.K)		Electrical Resistivity (n.m)
				0-100°C	0-315°C	0-538°C	at 100°C	at 500°C
304	8000	500	193	17.2	17.8	18.4	16.2	21.5	720
304L	8000	500	193	17.2	17.8	18.4	16.2	21.5	720
304H	8000	500	193	17.2	17.8	18.4	16.2	21.5	720

 Tube Sizes for Heat Exchangers & Condensers & Boilier 

Outside Diameter		BWG
		25	22	20	18	16	14	12	10
		Wall Thickness mm
		0.508	0.71	0.89	1.24	1.65	2.11	2.77	3.40
mm	inch	Weight kg/m
6.35	1/4	0.081	0.109	0.133	0.174	0.212
9.53	3/8	0.126	0.157	0.193	0.257	0.356	0.429
12.7	1/2		0.214	0.263	0.356	0.457	0.612	0.754
15.88	5/8		0.271	0.334	0.455	0.588	0.796	0.995
19.05	3/4		0.327	0.405	0.553	0.729	0.895	1.236
25.4	1		0.44	0.546	0.75	0.981	1.234	1.574	2.05
31.75	1 1/4		0.554	0.688	0.947	1.244	1.574	2.014	2.641
38.1	1 1/2		0.667	0.832	1.144	1.514	1.904	2.454	3.233
44.5	1 3/4				1.342	1.774	2.244	2.894	3.5
50.8	2				1.549	2.034	2.574	3.334	4.03
63.5	2 1/2				1.949	2.554	3.244	4.214	5.13
76.2	3				2.345	3.084	3.914	5.094	6.19
88.9	3 1/2				2.729	3.609	4.584	5.974	7.27
101.6	4					4.134	5.254	6.854	8.35
114.3	4 1/2					4.654	5.924	7.734	9.43
Stainless Steel Tube: A/SA213, A/SA269, A/SA789, EN10216-5, GOST9941-81.

A269 A213 A312 A789 GOST9941  EN10216-5 Standard Tolerance for Stainless Steel Seamless Tube Pipe

Standard	Outside Diameter Tolerance(mm)		Thickness Tolerance(mm)		Length Tolerance (mm)
ASTM A269	D<12.7	±0.13	±15%		+3.2 / -0
	(12.7~38.1]	±0.13	±10%
	[38.1~88.9)	±0.25			+4.8 / -0
	[88.9~139.7)	±0.38
	[139.7~203.2)	±0.76
ASTM A213	D<25.4	±0.1	D≤38.1	+20%/ -0%	D≤50.80	+3 / -0
	[25.4~38.1]	±0.15
	(38.1~50.8)	±0.2	D>38.1	+22%/ -0%	D>50.8	+5 / -0
	[50.8~63.5)	±0.25
	[63.5~76.2)	±0.30
	[76.2~101.6]	±0.38
	(101.6~190.5]	+0.38  / -0.64
	(190.5~228.6]	+0.38  / -1.14
ASTM A312	[10.29~48.26]	+0.4  / -0.8	10.3~73	+20% / -12.5%	+6 / -0
			88.9~457 T/D≤5%	+22.5% / -12.5%
	(48.26~114.30]	±0.80	88.9~457 T/D>5%	+15% / -12.5%
	(114.30~219.08]	+1.6  / -0.8	508above T/D<5%	+22.5% /-12.5%
	(219.08~457.20]	+2.4  / -0.8	508above T/D>5%	+15%/-12.5%
ASTM A789	D<12.7	±0.13	±15%		+3 / -0
	[12.7 to 38.1)	±0.13	±10%
	[38.1 to 88.9)	±0.25			+5 / -0
	[88.9 to 139.7)	±0.38
	[139.7 to 203.2)	±0.76
ГОСТ 9941-81	[5~10]	Normal:±0.30 High:±0.20 Higher:±0.15	T:0.2	Normal:±0.05; High:±0.03	/
			T:0.3~0.4	Normal:±0.07; High:±0.05
			T:0.5~1.0	Normal:±0.15; High:±0.10
	[11~30]	Normal:±0.40 High:±0.30 Higher:±0.20	T:1.2~3.0	Normal:+12.5% / -15%; High:±12.5%; Higher:+12.5% / -10%
			T:3.5~7.0	Normal:±12.5%; High:+12.5% / -10%; Higher:±10%
	[32~95]	Normal:±1.2% High:±1% Higher:±0.8%	T:7.5~8.5	Normal:+12.5% / -10%; Higher:±10%
EN10216-5	D3	±0.75% / ±0.30mm	T3	±10%/ ±0.20mm	L≤6m	+5 +0
	D4	±0.5% / ±0.10mm	T4	±7.5% / ±0.15mm	≥6~12M	+10-0

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.
We provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, HT/DNT Test Report, Third Party Inspection Report.
• EN 10204/3.1B
• Raw Materials Certificate
• HT/NDT Test Report
• Third Party Inspection Report
Material Testing: We ensure that all our materials go through strict quality tests before dispatching them to our clients.
• Mechanical Testing
• Hardness Test
• Chemical Analysis - Spectro Analysis
• Positive Material Identification - PMI Testing
• Flattening Test
• Flaring Test
• Intergranular Corrosion (IGC) Test

PRODUCT APPLICATION

• 1. General service
• 2. Curatorial Industry
• 3. Food Industry
• 4. Ornamental
• 5. Aerospace Industry
• 6. Petrochemical
• 7. Fluid transport
• 8. Nuclear Industry
• 9. Boiler heat- exchanger
• 10. Oil and gas service

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. One of our company strengths is its people, with many colleagues having been with the company from the beginning. This provides our customers with the benefit of a wealth of experience and industry knowledge. 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:

1. Environmental standards
2. Health and safety standards
3. Ethical trading standards
4. 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. Our delivery of long-term tangible benefits enables our customers to compete in today's challenging global marketplace.
In order to achieve our goals, we are improving our facilities and expanding our machinery to offer broader processing capabilities. Additionally, our investment extends to the growth and development of our teams, which represent our most valuable resource. We aim for our customers to receive the best experience and trust in the expertise, knowledge, and experience of our teams. As we continue looking towards the future, we rely on our core values to guide both decisions and actions.

Our Advantages

1. More than 16 Years of Experience in Stainless Steel Production.
2. Provides cost-effective products and professional services to you.
3. We offer an extensive range of stainless steel, super duplex steel,nickel alloy.

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.