ASTM A312 Tp309h Honing Hexagon Polished Seamless Stainless Steel Pipe

Product Description

  

Available Grades

 

HYT Support Diverse Stainless Steel Material
Stainless Steel
Base Grade	Variants
TP201	TP201LN, TP202
TP304	TP304L, TP304H, TP304N, TP304LN
TP309	TP309S, TP309H, TP309Cb, TP309HCb, TP309LMoN
TP310	TP310S, TP310H, TP310Cb, TP310HCb, TP310HCbN, TP310MoCbN, TP310MoLN
TP316	TP316L, TP316H, TP316Ti, TP316N, TP316LN
TP317	TP317L, TP317LM, TP317LMN
TP321	TP321H
TP347	TP347H, TP347HFG, TP347LN, TP347W
TP348	TP348H
TP444
Duplex Stainless Steel
S31803 / S32205 / S32750 / S32760 / S32304 / S32003

 

HYT 202 Stainless Steel Pipe

Economical austenitic stainless steel pipe, showing superior performance in mildly corrosive environments. HYT 202 pipes are made using precision cold rolling technology, with high surface finish, suitable for civil fields such as interior decoration, furniture manufacturing, and food processing equipment. While maintaining basic anti-rust properties, it provides a more cost-effective solution.
 

 

HYT 304/304L Stainless Steel Pipe

A model of industrial-grade general-purpose stainless steel pipes. The HYT 304 series has excellent formability and welding performance, and the L-type low-carbon formula effectively prevents the precipitation of welding carbides. The solution-treated pipe body is widely recognized in chemical equipment, heat exchange systems, building curtain walls and other fields, and its surface passivation film can resist the erosion of most organic and inorganic acids.
 

 

HYT 310/310S Stainless Steel Pipe

Specialized pipe for high-temperature conditions. The alloy ratio with a chromium content of up to 25% gives the HYT 310 series excellent antioxidant ability and maintains stable performance in a high temperature environment of 1150ºC. It is particularly suitable for thermal systems such as heat treatment equipment, industrial kiln components, and radiation tubes. The S-type ultra-low carbon version significantly improves the ability to resist intergranular corrosion.
 

HYT 316/316L Stainless Steel Pipe

The benchmark for marine-grade corrosion-resistant pipes. The HYT 316 series with 2-3% molybdenum elements shows super strong pitting resistance in chloride environments. The L-type low-carbon version is specially optimized for welding processes and is the preferred pipe in the fields of shipbuilding, seawater desalination, coastal chemical industry, etc. Its pitting corrosion equivalent PREN value is above 26.
 

 

HYT 321 Stainless Steel Pipe

Titanium-stabilized austenitic pipe. By adding titanium elements to effectively control the precipitation of chromium carbide, HYT 321 pipes are particularly suitable for high-temperature operating environments in the range of 400-900ºC. Widely used in thermal circulation systems such as aircraft engine exhaust pipes and petrochemical cracking units, its intergranular corrosion resistance reaches the highest level of ASTM A312 standard.
 

HYT 410 Stainless Steel Pipe

Martensitic hardening practical pipe. HYT 410 can obtain a hardness value of up to 40HRC through heat treatment. On the premise of ensuring basic corrosion resistance, it is particularly suitable for wear-resistant parts, pump valve components, tool manufacturing and other fields. The inner and outer surfaces of the polished pipe body can reach Ra0.8μm finish.
 

 

HYT 904L Stainless Steel Pipe

Super austenitic special pipe. The high alloy formula with a nickel content of 25% makes HYT 904L perform well in strong corrosive media such as concentrated sulfuric acid and phosphoric acid. The microstructure uniformity is ensured by the triple annealing process, and it is specially designed for harsh environments such as pharmaceutical equipment, chemical reactors, and flue gas desulfurization systems.
 

HYT Duplex Steel 2205 Pipe

A new generation of high-strength corrosion-resistant pipes. The austenite-ferrite duplex structure makes HYT 2205 have both high strength (yield strength ≥ 450MPa) and excellent stress corrosion resistance. It is particularly suitable for submarine pipelines, oil and gas transportation, papermaking cooking equipment and other fields. Its chloride ion corrosion resistance is more than 3 times that of ordinary 316L.
 

HYT Duplex Steel 2507 Pipe

The pinnacle of super duplex stainless steel pipes. HYT 2507 with a PREN value of more than 40 adopts a 25Cr-7Ni-4Mo alloy system and exhibits excellent performance in high temperature and high pressure corrosion environments. The GTAW welding process ensures phase balance in the weld zone, which is the ultimate solution for seawater hydraulic systems, FGD scrubbers, and chemical high-pressure pipelines.
 

 

Standard	Cr	Ni	C	Mn	Si	P	S	N	Other
SS 201	16-18	3.5-5.5	0.15	5.5-7.5	0.75	0.06	0.03	0.25	-
SS 304	18-20	8-10.5	0.08	2	0.75	0.045	0.03	0.01	-
SS 304L	18-20	8-12	0.03	2	0.75	0.045	0.03	0.01	-
SS 310S	24-26	19-22	0.08	2	1.5	0.045	0.03	-	-
SS 316	16-18	10-14	0.08	2	0.75	0.045	0.03	0.10	Mo 2.0-3.0
SS 316L	16-18	10-14	0.03	2	0.75	0.045	0.03	0.10	Mo 2.0-3.0
SS 317	19	13	0.08	2	1	0.045	0.03	-	-
SS 317L	18-20	11-15	0.03	2	0.75	0.045	0.03	0.10 max.	Mo 3.0-4.0
SS 321	17-19	9-12	0.08	2	0.75	0.045	0.03	0.1	Ti 0.7
SS 430	16-18	0.75	0.12	1	1	0.04	0.03	-	-
SS 904L	19-23	23-28	0.02	2	1	0.045	0.035	-	Cu 1.0-2.0

 

Standard	Werkstoff Nr.	UNS	JIS	BS	GOST	AFNOR	EN
SS 201	1.4372	S20100	SUS 201	904S13	STS 317J5	Z2 NCDU 25-20	X1NiCrMoCu25-20-5
SS 304	1.4301	S30400	SUS 304	304S31	08Х18Н10	Z7CN18‐09	X5CrNi18-10
SS 304L	1.4306 / 1.4307	S30403	SUS 304L	3304S11	03Х18Н11	Z3CN18‐10	X2CrNi18-9 / X2CrNi19-11
SS 310S	1.4845	S31008	SUS 310S	310S16	20Ch23N18	-	X8CrNi25-21
SS 316	1.4401	S31600	SUS 316	316S16	0Cr17Ni12Mo2	Z7CND17-11-02	X5CrNiMo17-12-2
SS 316L	1.4404	S31603	SUS 316L	316S12	03Ch17N13M2	Z2CND17-12	X2CrNiMo17-12-2
SS 317	1.4449	S31700	SUS 317	-	-	Z6CND17-12-04	X3CrNiMo18-12-3
SS 317L	1.4428	S31703	SUS 317L	317S12	-	Z3CND19-15-04	X2CrNiMoN18-15-4
SS 321	1.4541	S32100	SUS 321	321S12	06Ch18N10T	Z6CNT18-10	X6CrNiTi18-10
SS 430	1.4016	S43000	SUS 430	430S15	12Ch17	Z8C17	X6Cr17
SS 904L	1.4539	-	SUS 890L	904S13	-	Z2NCDU25-20	X1NiCrMoCu25-20-5

 

Available Shapes

The Shape of the Tube, Defined by You

Move beyond traditional round tubes-HYT supports custom cross-sections of any shape: square, oval, polygonal, curved profiles, even your exclusive designs! From architectural aesthetics to functional optimization, we precisely match your engineering needs, delivering higher structural efficiency and standout visual appeal.

 

Specification

Product Type	Stainless Steel/Duplex Stainless Steel Pipe/Tube/Tubing
Standards	ASTM, EN, JIS, DIN, EN, GOST, etc.
Technique	Hot Rolled/Cold Rolled/Cold Drawing/Honed
Pipe Cross Section Type	Round / Oval / Flat Oval / Triangular / Rectangular/Square /  Hexagonal/Octagonal, and other special shape.
Size Range	OD: 1/8" to 60" (10.3mm to 1500mm)
	WT: SCH10 to SCH160 (2.11mm to50.01mm, 0.083" to 2")
Length	SRL, DRL, 20FT, 40FT, from 5 meter to 18meters, or customized.
End Process	Plain Ends, Beveled Ends,Threaded Ends
Application	Oilfield pipelines, Drilling pipes, Casing pipes, Structural steel tubes, Hydraulic cylinders, Precision machinery parts, Boiler tubes, Heat exchanger tubes, Aircraft hydraulic systems, etc.
Available Third Party Inspection	SGS, BV, TÜV, Intertek, etc.
Certification	ISO 9001, TÜV, BSI, LRQA, DNV

 

Company Profile

HYT - A Professional Stainless Steel Pipe Source Factory

 

Established in 2015, Jiangsu HYT International Trading Co., Ltd. stands as a fully-owned subsidiary of Wuxi Lusheng Special Steel Co., Ltd. Our foundation is built on a strong commitment to extending our reach beyond domestic borders, focusing on international sales and market exploration for a vast array of steel pipes. This strategic position enables us to serve a wider audience and meet the sophisticated demands of global markets.

Proudly recognized as a high-tech enterprise, our group has achieved prestigious certifications from ISO and SGS, affirming our dedication to excellence. We seamlessly integrate research, development, production, and sales processes to deliver superior steel pipes crafted from stainless steel, carbon steel, and alloy steel.

 

Certifications

As an industry benchmark specializing in the manufacture and sale of seamless steel pipes, stainless steel pipes and carbon steel pipes, HYT provides a full range of pipeline products and services for energy, chemical, machinery, construction and other fields with excellent quality and cutting-edge technology as the core. Our products strictly follow international standards and have passed multiple authoritative certifications such as ISO, API, CE, etc., ensuring that each steel pipe reaches the industry's top level in terms of pressure resistance, corrosion resistance and precision dimensions.

FAQ

Q: How to choose the applicable scenarios of different grades (such as 304L vs 316L)?
A:304/304L: general purpose, suitable for mildly corrosive environments such as food processing and building curtain walls
316/316L: contains molybdenum to resist chloride ion corrosion, recommended for marine engineering and chemical equipment
Duplex steel 2205/2507: high strength and corrosion resistance, suitable for submarine pipelines and high-pressure oil and gas systems
904L: super austenite, designed for strong acid environments such as concentrated sulfuric acid and phosphoric acid
Free material selection consultation can be provided, and models can be recommended based on your medium, temperature, pressure and other parameters.

Q: What is the minimum order quantity (MOQ)? Are small batch orders accepted?
A: Conventional specifications (DN15-DN300): MOQ 500 meters/batch
Special materials/specifications (such as 904L, duplex steel): MOQ 200 meters/batch
Support sample orders (≥20 meters) to meet R&D or project testing needs.

Q: Rust prevention treatment process for pipes? Is salt spray test supported?
A: Standard delivery status: pickled and passivated (ASTM A380)
Salt spray test: 304/316 series ≥72 hours (neutral salt spray), duplex steel ≥200 hours
Optional electrolytic polishing (EP) or titanium plating to improve corrosion resistance.

Q: How long is the delivery time for regular orders? Is expedited delivery supported?
A: Standard stock specifications: Delivery within 7 working days (covering mainstream models of DN15-DN600)
Customized specifications: 15-25 days (depending on the complexity of the process)
Expedited orders: Paying a 10% expedited fee can shorten the cycle by 30%, and the production schedule must be confirmed in advance.

Q: How to deal with quality disputes? Is warranty provided?
A: 12-month quality assurance period, provide material traceability batch number
If specifications are not met or performance defects are found, respond within 72 hours, support return or compensation production
Performance insurance agreement can be signed for major engineering projects.

Q: Is processing supporting services provided?
A: HYT supports:
Laser cutting/groove processing (tolerance ±0.1mm)
Bending/flaring (maximum bending angle 180°)
Threading of pipe ends (in accordance with GB/T7306 standard)
Customized packaging (wooden box shockproof/vacuum anti-rust film).

Q: How to obtain samples and test reports?
A: Free sample sections ≤3 meters (limited to conventional models)
Prepaid freight means sending samples + complete test document package
Special material samples are charged cost (can be deducted from subsequent orders).