Sigma Surgical Pvt Ltd manufactures Stainless Steel Guidewire. Sigma Surgical Pvt Ltd is an ISO 9001: 2000 certified company. Stainless Steel Guidewire is a metallic wire used to gain access to an artery or vein. A catheter can also be advanced into an artery or vein over a guidewire. It comes in size: Ø 1.8 mm, and has a variation of simple guidewire. Stainless Steel Guidewires are manufactured by investment casting method for use in surgical appliances and for joints in the body. These high grade stainless steel components are electro-polished and passivated to prolong the possibility of surface oxidation