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SVEZA Group certified by GTT

December 16, 2016

The plywood SVEZA Gas for construction of LNG-carriers appeared in the company's product portfolio. In October 2016, SVEZA Ust-Izhora plywood mill obtained the Gaztransport & Technigaz (GTT)[1] Approval confirming compliance with specification of containment system for liquefied natural gas carriers. SVEZA Group, a world leader in birch plywood production, has become the fourth company in the world certified to deliver to LNG-carriers manufacturers. The company's target is to gain at least a 30% share of the market with the estimated annual volume of 60,000 cubic meters of plywood.

“From now on Russian plywood along with European will be used for modern vessels construction. With a 20% share of the global plywood market — which is twice as much as that of our competitors — we are expanding into new markets and segments, − comments Yulia Ermakova, the Head of Marketing and Client Service of SVEZA Group. − A pilot batch of SVEZA plywood for LNG-carriers has undergone a thorough inspection and testing by GTT. The first industrial batch was produced in April 2016 at SVEZA’s mill in Saint-Petersburg”.

In the manufacture of containment system for LNG-carriers, plywood is the key structural material, assumes the load of the gas transported. LNG-carriers have cargo capacities of up to 200,000 cubic meters, and the weight of gas they ship can be up to 85,000 tons In order to the new product SVEZA Gas meets the most stringent requirements for physical and mechanical characteristics, it is made of selected birch veneers. This means a severe restriction of wood flaws and processing defects not only in external, but also in internal layers of the plywood. For example, spliced veneers are not allowed in internal layers, knot holes do not exceed 30 mm, the width of open shakes is not more than 5 mm.

In addition to high strength characteristics, plywood for LNG-carriers must be resistant to cryogenic temperatures (-160 С). Thus, when the product was being tested for compatibility with liquefied gas, the plywood samples were immersed in the gas for 48 hours, then warmed up to the room temperature. At that, the thickness of SVEZA Gas plywood increased by not more than 1%, and the strength of the product remained unchanged.

It is no coincidence that SVEZA Ust-Izhora plywood mill in Saint-Petersburg was selected as a producer of SVEZA Gas plywood. "The mill specializes in supplying fastidious industrial customers, we have good access to main sea lanes, 80% of our products go to export, − comments Svyatoslav Sarson, the CEO of SVEZA Ust-Izhora plywood mill. − With our technological base and know-how we produce plywood that meets the highest standards. As we cooperate closely with LNG-carriers producers, we can satisfy their high requirements for quality and service”.

"SVEZA has shipped products for construction of two vessels in South Korea, and at the moment we are negotiating new deliveries, − continues Yulia Ermakova. − The demand on liquefied natural gas is projected to increase, encouraging growth in LNG-carriers industry. Currently GTT’s order book consists of 91 vessels, and this creates new opportunities for development of all market participants".

[1] GTT (Gaztransport & Technigaz) is a French engineering company in containment systems for the shipping and storage in cryogenic conditions of LNG (liquefied natural gas), GTT offers engineering, consultancy, training, maintenance support and technical design services. For more information, visit

Technical Specifications of SVEZA Gas NO96

  • Grade: ВВ/ВВ.
  • Thickness, mm: 6.5; 9; 12; 15; 21; 24; 30 and 35.
  • Thickness tolerance: ± 0.5 mm.
  • Sheet size: according to customer’s specifications, is obtained by cutting the plywood of size 4 x 8 (1,250 x 2,500 mm).
  • Physical and mechanical characteristics The minimum value for plywood 9 mm
    Plywood SVEZA Gas NO96 (before and after immersion in liquefied gas) Standard plywood
    Ultimate static bending strength along the grain of face veneers, MPa 65 60
    Modulus of elasticity in static bending along the grain of face veneers, MPa 7,000 6,000
    Ultimate static bending strength against the grain of face veneers, MPa 45 30
    Modulus of elasticity in static bending against the grain of face veneers, MPa 3,500 3,000
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