я хочу установить ширину для PdfpCell в таблице, я хочу дизайн этого

я пишу этот код

  PdfPCell cell;
            PdfGrid tableHeader;
            PdfGrid tmpTable;
            PdfGrid table = new PdfGrid(numColumns: 1) { WidthPercentage = 100, RunDirection = PdfWriter.RUN_DIRECTION_LTR, ExtendLastRow = false };

            string imagepath2 = HttpRuntime.AppDomainAppPath + "Header.JPG";
            cell = new PdfPCell() { Border = 0, RunDirection = PdfWriter.RUN_DIRECTION_RTL };
            cell.Image = iTextSharp.text.Image.GetInstance(imagepath2);
            table.AddCell(cell);


            tableHeader = new PdfGrid(numColumns: 10);
            tableHeader.RunDirection = PdfWriter.RUN_DIRECTION_LTR;

            tmpTable = new PdfGrid(numColumns: 1);
            tmpTable.TotalWidth = 10f;
            tmpTable.LockedWidth = true;
            cell = new PdfPCell() {Rotation =-90,VerticalAlignment =Element.ALIGN_MIDDLE, HorizontalAlignment =Element.ALIGN_CENTER, BorderWidth = 1};
            cell.Phrase = fontSelector.Process("SER. No");

            tmpTable.AddCell(cell);

            cell = new PdfPCell(tmpTable) { BorderWidth = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            tableHeader.AddCell(cell);

            ////////////////////////////////////////////////////////////
            tmpTable = new PdfGrid(numColumns: 1);
            cell = new PdfPCell() { Border = 0,  BorderWidthBottom = 1,VerticalAlignment =Element.ALIGN_MIDDLE, HorizontalAlignment =Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("TYPE OF SHIPPING");
            //
            tmpTable.AddCell(cell);


            cell = new PdfPCell() { Border = 0, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("AWB / BL NO.");
            tmpTable.AddCell(cell);

            cell = new PdfPCell(tmpTable) { BorderWidth = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            tableHeader.AddCell(cell);
            ///////////////////////////////////////////////////////////////

            tmpTable = new PdfGrid(numColumns: 1);
            cell = new PdfPCell() { Border = 0, BorderWidthBottom = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("ORDER NO.");
            tmpTable.AddCell(cell);


            cell = new PdfPCell() { Border = 0, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("COMPLEX NAME");
            tmpTable.AddCell(cell);

            cell = new PdfPCell(tmpTable) { BorderWidth = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            tableHeader.AddCell(cell);
            ///////////////////////////////////////////////////////////////

            tmpTable = new PdfGrid(numColumns: 1);
            cell = new PdfPCell() { Border = 0, BorderWidthBottom = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("QTY.");
            tmpTable.AddCell(cell);


            cell = new PdfPCell() { Border = 0, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("G.W Kgs.");
            tmpTable.AddCell(cell);

            cell = new PdfPCell(tmpTable) { BorderWidth = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            tableHeader.AddCell(cell);
            ///////////////////////////////////////////////////////////////
            tmpTable = new PdfGrid(numColumns: 1);
            cell = new PdfPCell() { Border = 0, BorderWidthBottom = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("DISCHARGE PPORT");
            tmpTable.AddCell(cell);


            cell = new PdfPCell() { Border = 0, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("DESTINATON");
            tmpTable.AddCell(cell);

            cell = new PdfPCell(tmpTable) { BorderWidth = 1 };
            tableHeader.AddCell(cell);
            ///////////////////////////////////////////////////////////////
            cell = new PdfPCell() { BorderWidth = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("DESCRIPTION OF GOODS");

            tableHeader.AddCell(cell);

            /////////////////////////////////////////////////////////////
            tmpTable = new PdfGrid(numColumns: 1);
            cell = new PdfPCell() { Border = 0, BorderWidthBottom = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("LINE DOC. RECI. DATE");
            tmpTable.AddCell(cell);


            cell = new PdfPCell(new Phrase("")) { Border = 0, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("OWNER DOC. RECI. DATE");
            tmpTable.AddCell(cell);

            cell = new PdfPCell(tmpTable) { BorderWidth = 1 };
            tableHeader.AddCell(cell);
            ///////////////////////////////////////////////////////////////
            cell = new PdfPCell() { BorderWidth = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("CLEARANCE DATE");

            tableHeader.AddCell(cell);

            ///////////////////////////////////////////////////////////

            cell = new PdfPCell() { BorderWidth = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("CUSTOM PERMIT NO.");

            tableHeader.AddCell(cell);

            ///////////////////////////////////////////////////////////
            cell = new PdfPCell() { BorderWidth = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };
            cell.Phrase = fontSelector.Process("DISPATCH DATE");
            tableHeader.AddCell(cell);

            ///////////////////////////////////////////////////////////
            cell = new PdfPCell(tableHeader) { BorderWidth = 1, VerticalAlignment = Element.ALIGN_MIDDLE, HorizontalAlignment = Element.ALIGN_CENTER };

            table.AddCell(cell);
            doc.Add(table);
            ///////////////////////////////////////////////////////////
            doc.Close();

но этот код создать эту таблицу

я хочу изменить ширину столбца SerNo, но

Но я не знаю, как изменить ширину ячейки, пожалуйста, помогите мне.