GOST9941-81 12X18H12T Tube For Cooling and Chemical Engineering Field

Product Details:

Place of Origin:	China , Korea
Brand Name:	YUHONG
Certification:	ABS, DNV-GL, LR, BV, CCS, KR, ASME, TUV, SGS, BV, IEI, IBR, ISO9001, ISO 14001, ISO 18001
Model Number:	Seamless Tube

Payment & Shipping Terms:

Minimum Order Quantity:	1 PC
Price:	1 - 10000 USD
Packaging Details:	Ply-Wooden Case & Woven Bag
Delivery Time:	5 - 60 Days
Payment Terms:	L/C,T/T
Supply Ability:	10000 Tons/Month

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Detailed Product Description

Material:	12X18H12T	Standard:	GOST9941-81
Ends:	PE , BE	Testing:	UT, ET, HT, PMI
Size:	OD : 6mm~ 50.8mm , WT: 0.5mm~ 15mm, L: Max:34m/pc	Application:	Heat Exchanger, Cooling , Heating, Condenser, Tube Bundle
Highlight:	GOST9941-81 air preheater tube , Finned air preheater tube , 12X18H12T finned tube bundle

GOST9941-81 12X18H12T Tube For Cooling and Chemical Engineering Field

Product Description

For chemical-engineering duties the grade remains austenitic from –196 °C up to 600 °C and resists nitric, acetic and alkaline solutions as well as many organic solvents. It is therefore specified for urea high-pressure condensers, nitric-acid absorption-coil coolers, chlor-alkali brine pre-heaters and PTA solvent coolers. With 590–690 MPa tensile strength and ≥ 39 J/cm² impact toughness the tubing survives frequent thermal shocks and pressure swings, complying with GOST, PED and AD2000 pressure-vessel codes.
GOST9941-81 12X18H12T seamless tube is a Russian-standard Ti-stabilized austenitic stainless pipe with ~18 % Cr and 12 % Ni. The addition of 0.6 % Ti prevents inter-granular attack in chloride- or oxidizing-acid environments. In cooling circuits it withstands 3–4 m/s flow of seawater, recycled water or cooling-tower spray without pitting or chloride SCC, so it is widely used for power-plant condensers, central coolers, chemical-water plate heat-exchangers and LNG open-rack vaporizers, lengthening outage intervals and cutting leakage risk.

Chemical Composition

Grade	Cr	Ni	Ti	C
12X18H12T	17.0-19.0%	9.0-12.0%	≥ 5x C content	≤ 0.12%

Mechanical Properties

Grade	Tensile Strength	Yield Strength	Elongation	Hardness
12X18H12T	≥ 205 MPa (30 ksi)	≥ 515 MPa (75 ksi)	≥ 35% in 50 mm	Typically ≤ 95 HRB

Industrial Applications

Chemical Processing: Heat exchangers for corrosive chemical processes
Oil and Gas: Crude oil refining, natural gas processing, and petrochemical applications
Power Generation: Steam boilers and cooling systems in power plants
Food and Beverage: Pasteurization and refrigeration systems requiring hygiene
Pharmaceuticals: Processes demanding strict material integrity
Water Treatment: Desalination and wastewater treatment systems
Marine Applications: Shipboard heat exchangers exposed to seawater